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{{for|the 2017 documentary film|Ghost Hunting (film)}}
{{Other uses|Ghosthunter (disambiguation)}}
{{Redirect2|Paranormal investigation|paranormal investigator|other uses|Paranormal investigators (disambiguation){{!}}Paranormal investigators}}{{paranormal|state=expanded|image=Nightshot2.png|caption=A ghost hunter taking a [[EMF measurements|reading]] with an EMF meter.}}

'''Ghost hunting''' is the process of investigating [[list of reportedly haunted locations|locations]] that are reported to be haunted by [[ghost]]s. Typically, a ghost-hunting team will attempt to collect evidence supporting the existence of [[paranormal]] activity. Ghost hunters use a variety of electronic devices, including [[EMF meter]]s, digital [[thermometer]]s, both handheld and static [[digital camera|digital]] [[video camera]]s, including [[thermographic camera|thermographic]] and [[night vision|night vision cameras]], as well as digital [[dictation machine|audio recorders]]. Other more traditional techniques are also used, such as conducting [[interview]]s and [[research]]ing the [[history]] of allegedly haunted sites. Ghost hunters may also refer to themselves as "paranormal investigators."<ref name="MiamiHerald">{{cite news|url=http://www.miamiherald.com/news/miami_dade/pinecrest/story/1241173.html|title=Ghost hunters say Deering Estate is ground zero for lost spirits|last=Cohen|first=Howard|date=September 19, 2009|publisher=The Miami Herald|accessdate=8 January 2010|archiveurl=http://www.miamiherald.com/2009/10/21/1294115/ghost-hunters-say-deering-estate.html|archivedate=October 10, 2010}}</ref>

Ghost hunting has been heavily criticized for its dismissal of the [[scientific method]]. No scientific study has ever been able to confirm the existence of ghosts.<ref name="ShadyScience">{{cite web|url=http://www.livescience.com/strangenews/061027_ghost_hunters.html|title= The Shady Science of Ghost Hunting|last=Radford|first=Benjamin | authorlink=Benjamin Radford | date=27 October 2006|publisher=LiveScience|accessdate=15 December 2009}}</ref><ref>{{cite news|url=http://www.foxnews.com/story/0,2933,225640,00.html|title=Study: No Scientific Basis for Vampires, Ghosts|date=October 26, 2006|work=[[Fox News]]|publisher=[[Associated Press]]|location=Washington}}</ref> The practice is considered a [[pseudoscience]] by the vast majority of educators, academics, science writers, and skeptics.<ref name="regal">[[Brian Regal|Regal, Brian]]. (2009). ''Pseudoscience: A Critical Encyclopedia''. Greenwood. pp. 43; 75–77. {{ISBN|978-0-313-35507-3}}</ref><ref name=NSF /><ref name="JenzenMunt2014">{{cite book|author1=Dr Olu Jenzen|author2=Professor Sally R Munt|title=The Ashgate Research Companion to Paranormal Cultures|url=https://books.google.com/books?id=rvuAAgAAQBAJ&pg=PT197|date=28 January 2014|publisher=Ashgate Publishing, Ltd.|isbn=978-1-4724-0612-5|pages=197–}}</ref><ref name=Hill /><ref name=Radford /><ref name="Hufington Post">{{cite web|last1=Schmaltz|first1=Rodney|title=Battling Psychics and Ghosts: The Need for Scientific Skepticism|url=http://www.huffingtonpost.com/rodney-schmaltz/battling-psychics-and-ghosts-the-need-for-scientific-skepticism_b_5207547.html|website=Huffington Post|accessdate=12 September 2015}}</ref><ref name=Campbell>{{cite web|last1=Campbell|first1=Hank|title=Think Pseudoscience Isn't Dangerous? Ghost Hunter Looking For Ghost Train Killed By Real One|url=http://www.science20.com/science_20/blog/think_pseudoscience_isnt_dangerous_ghost_hunter_looking_ghost_train_killed_real_one-71052|website=Science 2.0|publisher=ION Publications|accessdate=12 September 2015}}</ref><ref name="Potts" /> [[History of science|Science historian]] [[Brian Regal]] described ghost hunting as "an unorganized exercise in futility".<ref name="regal"/>

==History==
Paranormal research dates back to the 18th century, with organisations such as the [[Society for Psychical Research]] investigating spiritual matters. Psychic researcher [[Harry Price]] published his ''Confessions of a Ghost-Hunter'' in 1936.<ref>{{cite book|last1=Price|first1=Harry|title=Confessions of a ghost-hunter|date=1936|publisher=Putnam|url=https://books.google.com/books?id=wpoFAQAAIAAJ|language=en}}</ref>

Ghost hunting was popularised in the 2000s by television series such as ''[[Most Haunted]]'' and ''[[Ghost Hunters (TV series)|Ghost Hunters]]'', combined with the increasing availability of high-tech equipment. [[The Atlantic Paranormal Society]] reported a doubling in their membership in the late 2000s, attributing this to the television programs. Despite its lack of acceptance in academic circles, the popularity of ghost-hunting reality TV shows has influenced a number of individuals to take up the pursuit.<ref name="USAToday">{{cite news|url=https://www.usatoday.com/news/nation/2008-05-31-ghost-hunting_N.htm|title=Ghost-hunting groups enjoy surge in popularity|last=Peterson|first=Skip|agency=Associated Press|date=2008-05-31|publisher=USA Today|accessdate=14 December 2009}}</ref>

Small businesses offering ghost-hunting equipment and paranormal investigation services increased in the early 2000s. Many offer [[electromagnetic field]] (EMF) [[EMF meter|meters]], infrared motion sensors and devices billed as "ghost detectors".  The paranormal boom is such that some small ghost-hunting related businesses are enjoying increased profits through podcast and web site advertising, books, DVDs, videos and other commercial enterprises.<ref>[http://www.businessweek.com/technology/content/may2005/tc20050512_6388_tc024.htm Scaring Up Paranormal Profits<!-- Bot generated title -->]</ref>

One ghost-hunting group called "A Midwest Haunting" based in Macomb, Illinois, reported that the number of people taking its tours had tripled, jumping from about 600 in 2006 to 1,800 in 2008. Others, such as Marie Cuff of "Idaho Spirit Seekers" pointed to increased traffic on their websites and message boards as an indication that ghost hunting was becoming more accepted. Participants say that ghost hunting allows them to enjoy the friendship of like-minded people and actively pursue their interest in the paranormal. According to Jim Willis of "Ghosts of Ohio", his group's membership had doubled, growing to 30 members since it was founded in 1999 and includes both true believers and total skeptics. Willis says his group is "looking for answers, one way or another" and that skepticism is a prerequisite for those who desire to be "taken seriously in this field."<ref name="USAToday"/>

Author John Potts says that the present day pursuit of "amateur ghost hunting" can be traced back to the [[Spiritualism|Spiritualist]] era and early organizations founded to investigate paranormal phenomena, like London's [[The Ghost Club]] and the [[Society for Psychical Research]], but that modern investigations are unrelated to academic [[parapsychology]]. Potts writes that modern ghost hunting groups ignore the [[scientific method]] and instead follow a form of "techno-mysticism".<ref name="Potts">{{cite book|url=https://books.google.com/books?id=wxqJDCwS0QUC&dq=ghost+hunting&pg=PA211|title=Ghost Hunting In The Twenty-First Century (From Shaman to scientist: essays on humanity's search for spirits)|last=Potts|first=John|author2=James Houran|year=2004|publisher=Scarecrow Press|accessdate=15 December 2009|isbn=9780810850545}}</ref>

The popularity of ghost hunting has led to some injuries. Unaware that a "spooky home" in [[Worthington, Ohio]] was occupied, a group of teenagers stepped on the edge of the property to explore. The homeowner fired on the teenagers' automobile as they were leaving, seriously injuring one.<ref>{{cite news |last=Smyth |first=Julie C |title='Spooky House' case splits Ohio suburb |url=https://www.usatoday.com/news/nation/2007-08-21-2962711948_x.htm |work=[[USA Today]] |date=2007-08-21 |accessdate=2008-08-24}}</ref>
A woman hunting for ghosts was killed in a fall from a [[University of Toronto]] building.<ref>{{cite news|url=http://www.upi.com/Top_News/2009/09/10/Ghost-hunting-woman-dies-at-U-of-Toronto/UPI-12001252605435/?pvn=1|title=Ghost-hunting woman dies at U of Toronto|date=September 10, 2009|publisher=United Press International|accessdate=15 December 2009}}</ref>

An offshoot of ghost hunting is the commercial ghost tour conducted by a local guide or tour operator who is often a member of a local ghost-hunting or paranormal investigation group. Since both the tour operators and owners of the reportedly [[list of reportedly haunted locations|haunted]] properties share profits of such enterprises (admissions typically range between $50 and $100 per person), some believe the claims of hauntings are exaggerated or fabricated in order to increase attendance.<ref name="Confessions">{{cite web|url=http://www.csicop.org/specialarticles/show/confessions_of_a_ghost_tour_guide_and_skeptic/|title=Confessions of a Ghost Tour Guide and Skeptic|last=Howard|first=Philip |date=December 18, 2006|publisher=The Committee for Skeptical Inquiry|accessdate=15 December 2009}}</ref> The city of [[Savannah, Georgia]] is said to be the American city with the most ghost tours, having more than 31 as of 2003.<ref>{{cite news|url=http://www.cnn.com/2003/TRAVEL/10/30/sprj.ft03.hauntedsavannah/index.html|title=Walk your scaredy-pants off in Savannah|work=CNN.com Travel|publisher=[[CNN]] | date=2003-10-30 | accessdate=2010-05-03}}</ref><ref>{{cite news|url=http://www.news-gazette.com/news/entertainment/2008/08/24/rantoul_grads_film_explores_americas_most_haunted_city|title=Rantoul grad's film explores 'America's Most Haunted City'|work=News-Gazette}}</ref>

==Notable paranormal investigators==
===Zak Bagans===
{{Main|Zak Bagans}}

'''Zachary Alexander Bagans''' (born April 5, 1977) is an American [[paranormal investigation|paranormal investigator]], actor, television personality, and author. He is the principal host of the [[Travel Channel]] series, ''[[Ghost Adventures]]''.

In 2011, Bagans hosted ''[[Paranormal Challenge]]'', a concurrent spin-off program also on the [[Travel Channel]], which also starred radio talk show host and paranormal personality Dave Schrader. In 2011, Zak Bagans narrated and hosted a Travel Channel special called "Ultimate Travel: Legends of the Park," a show about America's National Parks and how they are haunted.<ref name="ZakBagans.com">{{cite web|last=Bagans|first=Zak|title=Zak Bagans Official Website|url=http://www.zakbagans.com/official/|accessdate=2012-09-01|archive-url=https://web.archive.org/web/20170702010922/http://www.zakbagans.com/official/|archive-date=July 2, 2017|url-status=dead|df=mdy-all}}</ref>

Bagans co-wrote a book with author Kelly Crigger titled ''Dark World: Into the Shadows with the Lead Investigator of the Ghost Adventures Crew'' (Victory Belt, 2011). On September 23, 2011, the book debuted on [[The New York Times Best Seller list|''The New York Times'' Best Seller list]] at No. 18.<ref>{{cite news | url=https://www.nytimes.com/best-sellers-books/2011-10-02/hardcover-nonfiction/list.html | work=The New York Times | first=Jennifer | last=Schuessler | title=Print & E-Books | access-date=March 3, 2017 | archive-url=https://web.archive.org/web/20160304125953/http://www.nytimes.com/best-sellers-books/2011-10-02/hardcover-nonfiction/list.html | archive-date=March 4, 2016 | url-status=live | df=mdy-all }}</ref>

In 2012, Bagans appeared in two music collaborations with [[Lords of Acid]] on the song "Paranormal Energy" and on an album titled ''Necrofusion'' with [[Praga Khan]].<ref>{{cite web |url=http://www.zakbagans.com/ |title=host of "Ghost Adventures" and "Paranormal Challenge" on the Travel Channel. Author of Dark World |publisher=Zak Bagans |accessdate=2012-12-24 |archive-url=https://web.archive.org/web/20130205082116/http://www.zakbagans.com/ |archive-date=February 5, 2013 |url-status=live |df=mdy-all }}</ref> Bagans produced ''[[Paranormal Paparazzi]]'', a reality show that premiered on September 28, 2012, but starred entertainment pundit [[Aaron Sagers]].<ref>{{cite web |url=https://twitter.com/Zak_Bagans |title=Zak Bagans (@Zak_Bagans) on Twitter |publisher=Twitter.com |accessdate=2012-12-24 |archive-url=https://web.archive.org/web/20171102041620/https://twitter.com/zak_bagans |archive-date=November 2, 2017 |url-status=live |df=mdy-all }}</ref> In March 2014, Bagans announced a spin-off series titled ''[[Ghost Adventures: Aftershocks]]'', which premiered in April 2014. It focuses on the life changes of people affected at haunted places before and after the Ghost Adventures crew's visit to some locations.

On April 2, 2016, Bagans premiered his new show on the Travel Channel, ''[[Deadly Possessions]]'' featuring his [https://thehauntedmuseum.com/ Haunted Museum] located in [[Las Vegas, Nevada]].<ref>{{cite web|url=http://www.travelchannel.com/shows/deadly-possessions|title=Deadly Possessions on Travel Channel|access-date=April 16, 2016|archive-url=https://web.archive.org/web/20160414034601/http://www.travelchannel.com/shows/deadly-possessions|archive-date=April 14, 2016|url-status=live|df=mdy-all}}</ref>

Bagans has been criticized by some paranormal enthusiasts for the aggressive and confrontational methods he uses during investigations. In a June 2009 interview with ''Paranormal Underground'' magazine, he responded, "I don't want the public perceiving us as the taunting, provocative ghost hunters. We do that only to the bad spirits who we know are attacking the living."<ref>{{cite web|last=Mannen|first=Scott|title=Fear No Evil|url=http://www.paranormalunderground.net/site/july-2009-paranormal-underground-psychic-phenomena-issue|access-date=February 2, 2013|archive-url=https://web.archive.org/web/20110724001945/http://www.paranormalunderground.net/site/july-2009-paranormal-underground-psychic-phenomena-issue|archive-date=July 24, 2011|url-status=dead|df=mdy-all}}</ref>

===Semyon Kirlian===
{{Main|Semyon Davidovich Kirlian}}

'''Semyon Davidovich Kirlian''' ({{IPAc-en|ˈ|k|ɜr|l|i|ən}}; {{langx|ru|Семён Давидович Кирлиан}}; {{langx|hy|Սիմոն Կիրլյան}}; 20 February 1898 &ndash; 4 April 1978) was a Soviet inventor and researcher of [[Armenians|Armenian]] descent, who along with his wife Valentina Khrisanovna Kirlian ({{langx|ru|Валентина Хрисановна Кирлиан}}; died 1972), a teacher and journalist, discovered and developed [[Kirlian photography]].

[[Kirlian photography]] employs a high-frequency oscillator or spark generator that operated at 75 to 200 [[kilohertz|kHz]].  Gradually the Kirlian and his wife's activity began to attract attention from professional scientists. Kirlian made controversial claims that the image he was studying might be compared with the human aura.

===Harry Price===
{{Main|Harry Price}}

'''Harry Price''' (17 January 1881&nbsp;– 29 March 1948) was a British [[Parapsychologist|psychic researcher]] and author, who gained public prominence for his investigations into psychical phenomena and his exposing fraudulent [[Spiritualism|spiritualist]] mediums.  He is best known for his well-publicized investigation of the purportedly haunted [[Borley Rectory]] in [[Essex]], England.

Price joined the [[Society for Psychical Research]] (SPR) in 1920 and because of his knowledge in [[Magician (illusion)|conjuring]] had debunked fraudulent mediums but in direct contrast to other magicians, Price endorsed some mediums that he believed were genuine.<ref>[[Paul Tabori]]. (1974). ''Harry Price: The Biography of a Ghosthunter''. Sphere Books. pp. 43-48. {{ISBN|0-7221-8326-7}}</ref> Price's first major success in psychical research came in 1922 when he exposed the 'spirit' photographer [[William Hope (paranormal investigator)|William Hope]].<ref>''Leaves from a Psychist's Case Book'' by Harry Price, Page 213.</ref><ref>Hall (1978) p. 222</ref> In the same year he travelled to Germany together with [[Eric Dingwall]] and investigated [[Willi Schneider]] at the home of Baron [[Albert von Schrenck-Notzing]] in Munich.<ref>Hall (1978) pp. 136–153</ref> In 1923, Price exposed the medium [[Jan Guzyk]], according to Price the "man was clever, especially with his feet, which were almost as useful to him as his hands in producing phenomena."<ref>Harry Price. (1942). ''Search for truth: My Life for Psychical Research''. Collins p. 206</ref>

Price wrote that the photographs depicting the [[Ectoplasm (paranormal)|ectoplasm]] of the medium [[Eva Carrière]] taken with Schrenck-Notzing looked artificial and two-dimensional made from cardboard and newspaper portraits and that there were no scientific controls as both her hands were free. In 1920 Carrière was investigated by psychical researchers in London. An analysis of her ectoplasm revealed it to be made of chewed paper. She was also investigated in 1922 and the result of the tests were negative.<ref>Harry Price. (1939). ''Fifty Years of Psychical Research''. Longmans, Green & Co. {{ISBN|978-0-7661-4242-8}}</ref> In 1925, Price investigated [[Maria Silbert]] and caught her using her feet and toes to move objects in the séance room.<ref>[[Lewis Spence]]. (1991). ''Encyclopedia of Occultism & Parapsychology''. Gale Research Company. p. 1522</ref> He also investigated the "direct voice" mediumship of [[George Valiantine]] in London. In the séance Valiantine claimed to have contacted the "spirit" of the composer [[Luigi Arditi]] , speaking in Italian. Price wrote down every word that was attributed to Arditi and they were found to be word-for-word matches in an Italian phrase-book.<ref>Harry Price. (1942). ''Search For Truth: My Life For Psychical Research''. Collins. p. 203</ref>

Price formed an organisation in 1926 called the [[National Laboratory of Psychical Research]] as a rival to the Society for Psychical Research.<ref>Rene Kollar. (2000). ''Searching for Raymond''. Lexington Books. p. 79. {{ISBN|978-0-7391-0161-2}}</ref> Price had a number of disputes with the SPR, most notably over the mediumship of [[Rudi Schneider]].<ref>James Houran. (2004). ''From Shaman to Scientist: Essays on Humanity's Search for Spirits''. Scarecrow Press. p. 169. {{ISBN|978-0-8108-5054-5}}</ref> Price paid mediums to test them-the SPR criticized Price and disagreed about paying mediums for testing.<ref>Jenny Hazelgrove. (2000). ''Spiritualism and British Society Between the Wars''. Manchester University Press. p. 206. {{ISBN|978-0-7190-5559-1}}</ref>

Price made a formal offer to the [[University of London]] to equip and endow a Department of Psychical Research, and to loan the equipment of the National Laboratory and its library. The University of London Board of Studies in Psychology responded positively to this proposal. In 1934, the National Laboratory of Psychical Research, which held Price's collection, was reconstituted as the [[University of London Council for Psychical Investigation]] with [[C. E. M. Joad]] as chairman and with Price as Honorary Secretary and editor, although it was not an official body of the University.<ref>Hall (1978) p. 169</ref> In the meantime, in 1927 Price joined [[the Ghost Club]], of which he remained a member until it (temporarily) closed in 1936.

In 1927, Price claimed that he had come into possession of [[Joanna Southcott]]'s box, and arranged to have it opened in the presence of one reluctant prelate (the [[Bishop of Grantham]], not a [[diocesan bishop]] but a [[suffragan]] of the diocese of Lincoln): it was found to contain only a few oddments and unimportant papers, among them a lottery ticket and a horse-pistol. His claims to have had the true box have been disputed by historians and by followers of Southcott.<ref>Hall (1978) pp. 154–160</ref><ref name=ackland>{{cite book |last=Ackland |first=Michael |title=Henry Handel Richardson: a life |publisher=[[Cambridge University Press]] |year=2004 |isbn=0-521-84055-4 |page=237}}</ref> Price exposed [[Frederick Tansley Munnings]], who claimed to produce the independent "[[spirit]]" voices of [[Julius Caesar]], [[Dan Leno]], [[Hawley Harvey Crippen]] and [[Henry VIII of England|King Henry VIII]]. Price invented and used a piece of apparatus known as a voice control recorder and proved that all the voices were those of Munnings. In 1928, Munnings admitted fraud and sold his confessions to a Sunday newspaper.<ref>Paul Tabori. (1966). ''Harry Price: The Biography of a Ghosthunter''. Living Books. p. 125</ref>

Price was friends with other debunkers of fraudulent mediums including [[Harry Houdini]] and the journalist [[E. Clephan Palmer|Ernest Palmer]].<ref>[[Harry Houdini]]. (2011 reprint edition). Originally published in 1924. A ''Magician Among the Spirits''. Cambridge University Press. p. 123. {{ISBN|978-1-108-02748-9}}</ref><ref>Alfred Douglas. (1982). ''Extra-Sensory Powers: A Century of Psychical Research''. Overlook Press. p. 201. {{ISBN|978-0-87951-160-9}}</ref>

In 1933, [[Frank Decker (medium)|Frank Decker]] was investigated by Price at the [[National Laboratory of Psychical Research]].<ref>Paul Tabori. (1966). ''Harry Price: The Biography of a Ghosthunter''. Living Books. p. 132</ref> Under strict scientific controls that Price contrived, Decker failed to produce any phenomena at all.<ref>[[Stuart Holroyd]]. (1976). ''Minds Without Boundaries''. Aldus Books. p. 49</ref> Price's psychical research continued with investigations into Karachi's Indian rope trick and the fire-walking abilities of [[Kuda Bux]] in 1935. He was also involved in the formation of the National Film Library ([[British Film Institute]]) becoming its first chairman (until 1941) and was a founding member of the [[Shakespeare Film Society]]. In 1936, Price broadcast from a supposedly haunted manor house in [[Meopham]], Kent for the [[BBC]] and published ''The Confessions of a Ghost-Hunter'' and ''The Haunting of Cashen's Gap''. This year also saw the transfer of Price's library on permanent loan to the [[University of London]] (see external links below), followed shortly by the laboratory and investigative equipment. In 1937, he conducted further televised experiments into [[fire-walking]] with [[Ahmed Hussain]] at [[Carshalton]] and [[Alexandra Palace]], and also rented [[Borley Rectory]] for one year. The following year, Price re-established the Ghost Club, with himself as chairman, modernizing it and changing it from a spiritualist association to a group of more or less open-minded skeptics that gathered to discuss paranormal topics. He was also the first to admit women to the club.

In the same year, Price conducted experiments with [[Rahman Bey]] who was "buried alive" in [[Carshalton]].  He also drafted a Bill for the regulation of psychic practitioners. In 1939, he organised a national telepathic test in the periodical ''[[John O'London's Weekly]]''. During the 1940s, Price concentrated on writing and the works ''The Most Haunted House in England'', ''Poltergeist Over England'' and ''The End of Borley Rectory'' were all published.

Famous cases associated with Price includes [[William Hope (paranormal investigator)]], [[Eileen Garrett]], [[Rudi Schneider]], [[Helen Duncan]], the Brocken experiment, [[Gef]], the [[Borley Rectory]], and Rosalie.

===Ed and Lorraine Warren===
{{Main|Ed and Lorraine Warren}}

'''Edward Warren Miney''' (September 7, 1926 – August 23, 2006) and '''Lorraine Rita Warren''' (née '''Moran''', born January 31, 1927) were American [[Ghost hunting|paranormal investigators]] and authors associated with prominent cases of [[haunting]]s. Edward was a World War II United States Navy veteran and former police officer who became a self-taught and self-professed [[demonologist]], author, and lecturer. Lorraine professes to be [[clairvoyant]] and a light trance [[Mediumship|medium]] who worked closely with her husband.

In 1952, the Warrens founded the '''New England Society for Psychic Research''', the oldest ghost hunting group in [[New England]].<ref name="Brown">{{cite book|last=Brown|first=Alan|title=Ghost Hunters of New England|publisher=[[University Press of New England]]|location=[[Lebanon, New Hampshire]]|page=3|date=September 30, 2008}}</ref> They authored numerous books about the paranormal and about their private investigations into various reports of paranormal activity. They claimed to have investigated over 10,000 cases during their career. The Warrens were among the very first investigators in the controversial [[The Amityville Horror|Amityville haunting]]. According to the Warrens, the N.E.S.P.R. uses a variety of individuals, including medical doctors, researchers, police officers, nurses, college students, and members of the clergy in its investigations.<ref>[http://www.warrens.net/ Ed & Lorraine Warren - Home<!-- Bot generated title -->]</ref>

Stories of ghost hauntings popularized by the Warrens have been adapted as or have indirectly inspired dozens of films, television series and documentaries, including 17 films in the [[The Amityville Horror (film series)|''Amityville Horror'' series]] and five films in [[The Conjuring Universe]] with two more yet to be released.

Skeptics [[Perry DeAngelis]] and [[Steven Novella]] have investigated the Warrens' evidence and described it as "blarney".<ref name="CP Newspaper" /> Skeptical investigators [[Joe Nickell]] and [[Ben Radford]] concluded that the more famous hauntings, Amityville and the Snedeker family haunting, did not happen and had been invented.<ref name="CSI" /><ref name="Snopes" />

====Notable Investigations====
=====Annabelle=====
{{main|Annabelle (doll)}}
According to the Warrens, in 1968, two roommates claimed their [[Raggedy Ann]] doll was possessed by the spirit of a young girl named Annabelle Higgins. The Warrens took the doll, telling the roommates it was "being manipulated by an inhuman presence", and put it on display at the family's "Occult Museum". The horror films ''[[Annabelle (film)|Annabelle]]'', ''[[Annabelle: Creation]]'', and upcoming ''[[Untitled Annabelle film|Annabelle 3]]'', spin-off prequels of ''[[The Conjuring]]'' are loosely based on the Warrens' story.<ref>{{cite news|last1=McLoughlin|first1=Pam|title=Real 'Annabelle' story shared by Lorraine Warren at Milford's Lauralton Hall|url=http://www.nhregister.com/lifestyle/20141004/real-annabelle-story-shared-by-lorraine-warren-at-milfords-lauralton-hall|accessdate=24 February 2015|publisher=New Haven Register|date=October 5, 2014}}</ref>

===== Perron family =====

In 1971, the Warrens claimed that the [[Harrisville, Rhode Island]], home of the Perron family was haunted by a witch who lived there in the early 19th century. According to the Warrens, Bathsheba Sherman cursed the land so that whoever lived there somehow died. The story is the subject of the 2013 film, ''[[The Conjuring]]''. Lorraine Warren was a consultant to the production and appeared in a [[cameo role]] in the film. A reporter for ''[[USA Today]]'' covered the film's supposed factual grounding.<ref name="ProvidenceJournal" /><ref name="USAToday">{{cite news|last=Alexander|first=Bryan|title=The 'true' story behind 'The Conjuring'|url=https://www.usatoday.com/story/life/movies/2013/07/22/conjuring-true-story-perron/2457209/|publisher=USA Today|accessdate=August 5, 2013|date=July 22, 2013}}</ref>

=====Amityville=====

The Warrens are probably best known for their involvement in the 1976 [[Amityville Horror]] case in which New York couple George and Kathy Lutz claimed that their house was haunted by a violent, demonic presence so intense that it eventually drove them out of their home. ''The Amityville Horror Conspiracy'' authors Stephen and Roxanne Kaplan characterized the case as a "hoax".<ref name="NYT">{{cite news|last=Downes|first=Lawrence|title=Editorial Observer; The Devil We Know on the Island We Love|url=https://select.nytimes.com/gst/abstract.html?res=F3071EF7385A0C778DDDAD0894DD404482|accessdate=August 17, 2011|newspaper=New York Times|date=April 14, 2005}}</ref> Lorraine Warren told a reporter for ''[[The Express-Times]]'' newspaper that the Amityville Horror was not a hoax. The reported haunting was the basis for the 1977 book ''The Amityville Horror'' and adapted into the [[The Amityville Horror (1979 film)|1979]] and [[The Amityville Horror (2005 film)|2005]] movies of the same name, while also serving as inspiration for the [[The Amityville Horror (film series)|film series]] that followed. The Warrens' version of events is partially adapted and portrayed in the opening sequence of ''[[The Conjuring 2]]'' (2016).  According to [[Benjamin Radford]], the story was "refuted by eyewitnesses, investigations and forensic evidence".<ref name="Snopes">{{cite web|last=Radford|first=Benjamin| authorlink = Benjamin Radford|title=The Amityville Horror|url=http://www.snopes.com/horrors/ghosts/amityville.asp|work=Urban Legends Reference Pages|publisher=Snopes.com|accessdate=October 25, 2011}}</ref> In 1979, lawyer William Weber reportedly stated that he, Jay Anson, and the occupants "invented" the horror story "over many bottles of wine".<ref name="Ledger">{{cite news|last=Associated Press|title='Amityville Horror 'amplified over bottles of wine, - lawyer|url=https://news.google.com/newspapers?id=U-hMAAAAIBAJ&sjid=9_oDAAAAIBAJ&pg=5288,3763517&dq=william+weber+amityville|accessdate=October 25, 2011|newspaper=Lakeland Ledger|date=July 27, 1979}}</ref>

=====Enfield Poltergeist=====
{{main|Enfield Poltergeist}}
In 1977, the Warrens investigated claims that a family in the North [[London]] suburb of Enfield was haunted by [[poltergeist]] activity. While a number of independent observers dismissed the incident as a hoax carried out by "attention-hungry" children, the Warrens were convinced that it was a case of "demonic possession". The story was the inspiration for ''[[The Conjuring 2]]'', although critics say the Warrens were involved "to a far lesser degree than portrayed in the movie" and in fact had shown up to the scene uninvited and been refused admittance to the home.<ref name="Nickell2012">{{cite book|last=Nickell|first=Joe| authorlink = Joe Nickell|title=The Science of Ghosts: Searching for Spirits of the Dead|url=https://books.google.com/books?id=oGS67QhECywC&pg=PT281|date=3 July 2012|publisher=Prometheus Books|isbn=978-1-61614-586-6|pages=281–}}</ref><ref name="Hawkes">{{cite web|last1=Hawkes|first1=Rebecca|title=What did the Enfield Haunting have to do with Ed and Lorraine Warren?|url=https://www.telegraph.co.uk/film/the-conjuring-2--the-enfield-poltergeist/haunting-ed-lorraine-warren-true-story/|website=Telegraph.co.uk|publisher=[[The Daily Telegraph]]|accessdate=4 September 2016}}</ref><ref>[http://www.historyvshollywood.com/reelfaces/conjuring-2-enfield-poltergeist/ Conjuring 2 vs the True Story of the Enfield Haunting] Historyvshollywood.com</ref>

=====Demons=====
{{main|Trial of Arne Cheyenne Johnson}}

In 1981, Arne Johnson was accused of killing his landlord, Alan Bono. Ed and Lorraine Warren had been called prior to the killing to deal with the alleged demonic possession of the younger brother of Johnson's fiancée. The Warrens subsequently claimed that Johnson was also possessed. At trial, Johnson attempted to plead Not Guilty by Reason of Demonic Possession, but was unsuccessful with his plea.<ref name="People">{{cite web|date=October 26, 1981|author=Lynne Baranski|url=http://www.people.com/people/archive/article/0,,20080531,00.html|title=In a Connecticut Murder Trial, Will (demonic) Possession Prove Nine-Tenths of the Law?|publisher=[[People Magazine]]|accessdate=August 17, 2008}}</ref> The case was described in the 1983 book ''[[The Devil In Connecticut|The Devil in Connecticut]]'' by [[Gerald Brittle.]] The story will be the subject of the upcoming film ''The Conjuring 3'' (2020).

===== Snedeker house =====
In 1986, Ed and Lorraine Warren arrived and proclaimed the Snedeker house, a former funeral home, to be infested with demons. The case was featured in the 1992 book ''In a Dark Place: The Story of a True Haunting.'' A TV movie that later became part of the Discovery Channel series ''[[A Haunting]]'' was produced in 2002. ''[[The Haunting in Connecticut]]'', a film very loosely based on the Warrens' version of events and directed by Peter Cornwell, was released in 2009. Horror author [[Ray Garton]], who wrote an account of the alleged haunting of the Snedeker family in [[Southington, Connecticut]], later called into question the veracity of the accounts contained in his book, saying: "The family involved, which was going through some serious problems like alcoholism and drug addiction, could not keep their story straight, and I became very frustrated; it's hard writing a non-fiction book when all the people involved are telling you different stories".<ref name="CSI">{{cite web|last=Nickell|first=Joe| authorlink = Joe Nickell|title=Demons in Connecticut|url=http://www.csicop.org/si/show/demons_in_connecticut/|work=Skeptical Inquirer|publisher=CSI|accessdate=August 17, 2011}}</ref> To paranormal investigator [[Ben Radford]], Garton said of Lorraine "'if she told me the sun would come up tomorrow morning, I'd get a second opinion'".<ref name="Radford 2017">{{cite book |last1=Radford |first1=Ben|authorlink=Ben Radford |title=Investigating Ghosts: The Scientific Search for Spirits |date=2017 |publisher=Rhombus Publishing Company |location=Corrales, New Mexico |isbn=978-0-936455-16-7 |page=201}}</ref>

===== Smurl family =====
{{main|Smurl haunting}}
[[Pennsylvania]] residents Jack and Janet Smurl reported their home was disturbed by numerous supernatural phenomena, including sounds, smells and apparitions. The Warrens became involved and claimed that the Smurl home was occupied by four spirits and also a demon that allegedly sexually assaulted Jack and Janet. The Smurls' version of their story was the subject of a 1986 paperback titled ''The Haunted'' and [[The Haunted (1991 film)|a 1991 made-for-TV movie of the same name]] directed by Robert Mandel.

=====Werewolf=====
In 1991, the Warrens' book ''Werewolf: The True Story of Demonic Possession'' was published in which they claim to have exorcised a demon manifesting itself as a "werewolf".

=====Union Cemetery=====
{{main|Union Cemetery (Easton, Connecticut)}}
Ed Warren's book ''Graveyard: True Hauntings from an Old New England Cemetery'' (St Martins Press, 1992)  features a "White Lady" ghost which haunts Union Cemetery. He claimed to have captured her essence on film.

===John Zaffis===
{{Main|John Zaffis}}
'''John Zaffis''' (born December 18, 1955) is a [[paranormal]] researcher born and based in [[Connecticut]], [[United States]]. He starred in the [[SyFy]] paranormal reality TV show, ''[[Haunted Collector]]'', and runs the Paranormal and Demonology Research Society of New England, which he founded in 1998.<ref>The New York Times, "Haunted Inn Draws Horde of Believers", by Peter Applebome, November 1, 2007</ref>

Zaffis has over forty years of experience as a [[paranormal investigator]].<ref name="Coast to Coast">[http://www.coasttocoastam.com/guests/909.html Coast to Coast]</ref> Research has taken Zaffis all over the United States as well as [[Canada]], [[England]], and [[Scotland]]. He lectures at colleges, universities, and libraries throughout the United States.<ref>Herald Mail, "Famed ghost hunter tells tales of the paranormal", by Dave McMillion, September 22, 2005</ref> Zaffis currently runs the Museum of the Paranormal located in [[Stratford, Connecticut]]. He also starred in and wrote the [[documentary film]] ''Museum of the Paranormal'', which was released in spring 2010 and produced by New Gravity Media.<ref>[http://www.museumoftheparanormalmovie.com/ ''Museum of the Paranormal'' Movie] {{webarchive|url=https://web.archive.org/web/20100110052647/http://www.museumoftheparanormalmovie.com/ |date=2010-01-10 }}</ref> His first book, ''Shadows of the Dark'', was co-written with Brian McIntyre and published in 2004 through [[iUniverse]].<ref name="Coast to Coast"/>

Zaffis starred in a documentary TV series on [[Syfy]] called ''[[Haunted Collector]]'', which premiered in June 1, 2011. It features him, his son, his daughter, and three other crew members searching for ghosts in certain buildings people call upon him to investigate. The premise of the show is that the crew finds an item in the building that may have some sort of connection with a haunting. The show was initially cancelled in November 2013. It has subsequently been renewed and as of October 2016 is releasing new episodes on Destination America.  He has also made appearances on ''[[Unsolved Mysteries]]'', ''[[Fox News Live]]'',<ref name="prsne.com"/> and the [[Discovery Channel]] documentaries ''Little Lost Souls'' and ''A Haunting in Connecticut''.<ref>[http://imdb.com/name/nm1846351/ Internet Movie Database]</ref> He currently co-hosts the ''Paranormal Nights'' radio show with Brendan Keenan. Zaffis was also in two episodes of ''[[A Haunting]]'' ("The Possessed" and "Ghost Hunter") where the main characters of both episodes are possessed by harmful demons. In the 2008 [[docudrama]] ''The Possessed'', he plays himself as the demonologist.<ref>[http://imdb.com/title/tt1067777/ ''The Possessed'' at IMDb]</ref> Zaffis also appeared and was interviewed in the 2009 ''[[Ghost Adventures]]'' episode at the [[Remington Arms]] factory. He also appeared in the 2009 ''[[Scared!]]'' episode filmed at the Grand Midway Hotel.<ref>{{cite web |author=Courtney Mroch |url=http://hauntjaunts.net/blog/2010/03/29/movie-monday-scareds-grand-midway-hotel/ |title=Movie Monday: SCARED!'s "Grand Midway Hotel" |publisher=HauntJaunts.net |accessdate=2010-05-18 |url-status=dead |archiveurl=https://web.archive.org/web/20100408065931/http://hauntjaunts.net/blog/2010/03/29/movie-monday-scareds-grand-midway-hotel/ |archivedate=2010-04-08 }}</ref>

Additionally, Zaffis has appeared six times on the long-running radio program ''[[Coast to Coast AM]]'' from 2005 to 2007.<ref name="Coast to Coast"/> Often, he is a guest and co-host on the ''Beyond Reality Radio'' program hosted by [[The Atlantic Paranormal Society]]'s [[Jason Hawes]] and [[Grant Wilson]].  He has also appeared in several episodes of the [[Travel Channel]]'s paranormal reality TV program, ''Ghost Adventures'', as well as on [[American Broadcasting Company|ABC]]'s investigative program, ''[[20/20 (U.S. TV series)|20/20]]'', and on [[Piers Morgan]]'s cable talk show broadcast on [[CNN]].

==Belief statistics==

According to a survey conducted in October 2008 by the [[Associated Press]] and [[Ipsos]], 34 percent of Americans say they believe in the existence of ghosts.<ref name="USAToday"/> Moreover, a [[Gallup poll]] conducted on June 6–8, 2005 showed that one-third (32%) of Americans believe that ghosts exist, with belief declining with age.<ref>{{cite web|url=http://www.gallup.com/poll/17275/OneThird-Americans-Believe-Dearly-May-Departed.aspx|title=One-Third of Americans Believe Dearly May Not Have Departed|last=Lyons|first=Linda|date=July 12, 2005|work=[[Gallup Poll]]|publisher=[[Gallup Organization|Gallup]]|accessdate=14 February 2010}}</ref><ref name="gallup">{{cite web|url=http://www.gallup.com/poll/16915/Three-Four-Americans-Believe-Paranormal.aspx|title=Three in Four Americans Believe in Paranormal|last=Moore|first=David W.|date=June 16, 2005|work=[[Gallup Poll]]|publisher=[[Gallup Organization|Gallup]]|accessdate=14 February 2010}}</ref> Having surveyed three countries (the United States, Canada, and Great Britain), the poll also mentioned that more people believe in [[haunted house]]s than any of the other paranormal items tested, with 37% of Americans, 28% of Canadians, and 40% of Britons believing.<ref name="gallup" /><ref>{{cite web|url=http://www.gallup.com/poll/19558/Paranormal-Beliefs-Come-SuperNaturally-Some.aspx|title=Paranormal Beliefs Come (Super)Naturally to Some|last=Lyons|first=Linda|date=November 1, 2005|work=[[Gallup Poll]]|publisher=[[Gallup Organization|Gallup]]|accessdate=14 February 2010}}</ref>

In 2002, the National Science Foundation identified haunted houses, ghosts, and communication with the dead among pseudoscientific beliefs.<ref name=NSF>{{cite web|title=Relationships Between Science and Pseudoscience|url=https://www.nsf.gov/statistics/seind02/c7/c7s5.htm|website=Science and Engineering Indicators, 2002|publisher=National Science Foundation|accessdate=12 September 2015}}</ref>

==Skepticism==
Critics question ghost hunting's methodology, particularly its use of instrumentation, as there is no scientifically proven link between the existence of ghosts and cold spots or [[electromagnetic field]]s. According to skeptical investigator [[Joe Nickell]], the typical ghost hunter is practicing [[pseudoscience]].<ref name="Times-Union">{{cite news|url=http://www.timesunion.com/AspStories/story.asp?storyID=732861|title=Skeptic: Ghost hunters practice 'pseudoscience' |last=Ettkin|first=Brian |date=October 27, 2008 |publisher=Albany Times-Union|accessdate=14 December 2009|archiveurl=http://www.bigorb.com/orb/forum/view.php?id=132&forum_id=1354|archivedate=October 10, 2010}}</ref> Nickell says that ghost hunters often arm themselves with [[EMF meter]]s, thermometers that can identify cold spots, and wireless microphones that eliminate background noise, pointing out the equipment being used to try to detect ghosts is not designed for the job. "The least likely explanation for any given reading is it is a ghost," maintains Nickell. [[Orb (paranormal)|Orbs]] of light that show up on photos, he says, are often particles of dust or moisture. "[[electronic voice phenomenon|Voices]]" picked up by tape recorders can be radio signals or noise from the recorder, EMF detectors can be set off by faulty wiring, microwave towers,<ref name="USAToday"/> iron, recording equipment, or cell phones, and heat sensors can pick up reflections off of mirrors or other metal surfaces. Nickell has also criticized the practice of searching only in the dark, saying that since some ghosts are described as "shadows or dark entities," he conducts searches in lighted rather than darkened conditions.<ref name="rcs_pomeroy">{{cite web|last1=Pomeroy|first1=Ross|title=How to Actually Hunt a Ghost|url=https://www.realclearscience.com/blog/2018/01/04/how_to_actually_hunt_a_ghost.html|website=Real Clear Science|publisher=Real Clear Science|accessdate=12 January 2018}}</ref>

According to investigator [[Benjamin Radford]], most ghost-hunting groups including [[The Atlantic Paranormal Society]] make many methodological mistakes. "After watching episodes of ''[[Ghost Hunters (TV series)|Ghost Hunters]]'' and other similar programs, it quickly becomes clear to anyone with a background in science that the methods used are both illogical and unscientific". Anyone can be a ghost investigator, "failing to consider alternative explanations for anomalous ... phenomena", considering emotions and feelings as "evidence of ghostly encounters". "Improper and unscientific investigation methods" for example "using unproven tools and equipment", "sampling errors", "ineffectively using recording devices" and "focusing on the history of the location...and not the phenomena". In his article for [[Skeptical Inquirer]] Radford concludes that ghost hunters should care about doing a truly scientific investigation "I believe that if ghosts exist, they are important and deserve to be taken seriously. Most of the efforts to investigate ghosts so far have been badly flawed and unscientific – and, not surprisingly, fruitless."<ref name=Radford>{{cite web|last1=Radford|first1=Benjamin|title=Ghost-hunting mistakes: science and pseudoscience in ghost investigations|url=http://business.highbeam.com/5799/article-1G1-239813706/ghosthunting-mistakes-science-and-pseudoscience-ghost|archive-url=https://web.archive.org/web/20151004100653/http://business.highbeam.com/5799/article-1G1-239813706/ghosthunting-mistakes-science-and-pseudoscience-ghost|url-status=dead|archive-date=4 October 2015|website=[[Skeptical Inquirer]]|publisher=Committee for Skeptical Inquiry|accessdate=12 September 2015}}</ref>

Although some ghost hunters believe [[Orb (paranormal)|orbs]] are of supernatural origin, skeptic [[Brian Dunning (skeptic)|Brian Dunning]] says that they are usually particles of dust that are reflected by light when a picture is taken, sometimes it may be bugs or water droplets. He contends that "there are no plausible hypotheses that describe the mechanism by which a person who dies will become a hovering ball of light that appears on film but is invisible to the eye." He does not believe there is any science behind these beliefs; if there were then there would be some kind of discussion of who, what and why this can happen. In his investigations he can not find any "plausible hypothesis" that orbs are anything paranormal.<ref>{{Skeptoid|id=4029|number=29|title=Orbs: The Ghost in the Camera |accessdate=2011-11-10}}</ref>

Science writer [[Sharon A. Hill|Sharon Hill]] reviewed over 1,000 "amateur research and investigation groups" (ARIGs), writing that "879 identified with the category of “ghosts”. Hill reports that many groups used the terms “science” or “scientific” when describing themselves; however "they overwhelmingly display neither understanding of nor adherence to scientific norms". 
<blockquote>
"ARIGs often promote their paranormalist viewpoint as scientifically based, especially in community presentations or lectures at educational facilities. While scientifically minded observers can readily spot the anemic and shoddy scholarship of popular paranormal investigation, the public, unaware of the fundamental errors ARIGs make, can be persuaded by jargon and “sciencey” symbols."</blockquote>
Hill sees the supernatural bias of such groups as an indication of how "far removed ARIG participants really are from the established scientific community".<ref name=Hill>{{cite web|last1=Hill|first1=Sharon| authorlink=Sharon A. Hill | title=Amateur Paranormal Research and Investigation Groups Doing 'Sciencey' Things|url=http://www.csicop.org/si/show/amateur_paranormal_research_and_investigation_groups_doing_sciencey_things|website=Csicop.org|publisher=Skeptical Inquirer – Volume 36.2 March/April 2012|accessdate=26 February 2015}}</ref>

In Hill's 2017 book ''Scientifical Americans'' reviewed by historian Brian Regal for ''[[Skeptical Inquirer]]'' magazine, Regal writes, that this is a timely book as it comes during an era when many question science. Regal wonders why believers think that "untutored amateurs know more (and are more trustworthy) than professional scholars". He asks why there is little discussion on "philosophical and theological aspects of their work" for example he theoretical questions like "What is a ghost?" and "Does one's religion in life determine if they can become a ghost in death?".  Hill gives a historiography of the field of "modern paranormal interest: monsters, UFO's, and ghosts." She does not insult or ridicule the people she writes about, but explains their stories through case studies. Regal feels that this book will not deter believers in the paranormal, but it is an important part of a "growing literature on amateur paranormal research". Regal states that paranormal researchers are not engaging in scientific discovery but are engaging "blithely in confirmation bias, selective evidence compiling, and the backfire effect while all the time complaining that it is the other side doing it. ... They, like all of us, are ultimately not searching for ghosts ... they are looking for themselves."<ref name="Regal review">{{cite journal |last1=Regal |first1=Brian |title=Strang Songs from the Fringe |journal=Skeptical Inquirer |date=2018 |volume=42 |issue=2 |pages=60–61 }}</ref>

In May 2018, Kenny Biddle, a skeptical investigator of paranormal claims, spent a night in the White Hill Mansion in Fieldsboro, New Jersey along with a group of fellow skeptics. The mansion, built in 1757, has traditionally been visited by many ghost hunting teams who claim to have experienced paranormal activity and communicate with spirits via [[Electronic voice phenomenon|EVP]]s while there. According to Biddle, many of the ghost hunters claimed that the EVPs they obtained "were not just random responses; they were direct, intelligent responses to specific questions". To challenge these claims, Biddle's group conducted a controlled experiment: the group recorded audio while asking any spirits in the Mansion to help them in locating a small foam toy hidden somewhere on the premises by a third party. They asked direct questions, but no responses were detected during review of the audio. Biddle subsequently reset the experiment and has offered a prize to ghost hunters for proof of their claim that they can obtain direct answers from spirits via EVP.<ref>{{cite web |last1=Biddle |first1=Kenny |title=Challenging Claims of Electronic Voice Phenomena (EVP) |url=https://www.csicop.org/specialarticles/show/challenging_claims_of_electronic_voice_phenomena_evp |website=www.csicop.org |accessdate=19 February 2019}}</ref>

==Depiction in media==
===Television===
=====Ghost Adventures=====
{{Main|Ghost Adventures}}

[[Zak Bagans]], [[Nick Groff]] (seasons 1–10), Aaron Goodwin, Billy Tolley, and Jay Wasley investigate [[reportedly haunted locations]], hoping to collect visual or auditory evidence of [[paranormal activity]]. Each episode begins with the crew touring the investigation site with its owners or caretakers. These introductions typically include Bagans's voice-overs of the site's history as well as interviews with people who claim to have witnessed [[paranormal phenomena]] there. On the basis of these interviews, the crew place X's with black or gray tape at the sites of some serious alleged paranormal activity.  They later return to these spots in order to set up static night-vision cameras to try and film it happening.

After completing the walk-through they discuss their strategy, then are locked in the location overnight, which they believe will prevent "audio contamination" and extraneous shadows. They use a variety of equipment, including digital thermometers, [[electromagnetic field]] (EMF) [[EMF measurement|meters]], handheld digital video cameras, audio recorders, the Ovilus device, point of view cameras, and infrared night-vision cameras in an effort to capture evidence of ghosts. The members sometimes place objects and shout verbal taunts they believe ghosts might move or respond to.

At the end of the episode they analyze their audio, photographs, and video footage, often with the assistance of alleged paranormal experts, and present anything they feel is "unexplained phenomena" to the audience.

During the series the crew claims to have captured and experienced various [[Forteana|Fortean phenomena]], which they say include simultaneous equipment malfunctions such as battery drain, voltage spikes, fluctuations in electromagnetic fields, sudden changes in temperature (such as [[Cold spot (paranormal)|cold spot]]s), unexplained noises, [[electronic voice phenomenon|electronic voice phenomena]] (EVP), and [[ghost|apparitions]].

The crew also claim to have recorded [[spirit possession]]s on video. Bagans believes that he was possessed at the [[Preston School of Industry]] and at [[Poveglia]] Island in Italy. Groff claims that he was overtaken by a "dark energy" at the [[Moon River Brewing Company]]. Goodwin claims he was "[[Demonic possession|under the influence of a dark spirit]]" at [[Bobby Mackey's Music World]] and [[Winchester Mystery House]].<ref>{{cite web|url=http://www.themortonreport.com/entertainment/television/ghost-adventures-aaron-goodwin/|title=Stalking Spirits with Ghost Adventures' Aaron Goodwin|author=Eric Olsen|work=The Morton Report|date=2011-10-03}}</ref> Goodwin later states in his blog that he determined that the spirit from Bobby Mackey's was actually more of a spirit guide than a dark spirit who guides him in his life.<ref>{{cite web|url=http://agoodwincollections.com/blog/|title=Blog - Aaron Goodwin Collections|publisher=}}</ref>

=====Ghost Hunters=====
{{Main|Ghost Hunters (TV series)}}

''Ghost Hunters'' has garnered some of the highest ratings of any Syfy reality programming.<ref>[http://www.thefutoncritic.com/pr.aspx?id=20051020scifi0 SciFi Network Ratings Release]</ref> From the start, the show has found an audience for its mix of paranormal investigation and interpersonal drama. It has since been syndicated on [[NBC Universal]] sister cable channel [[Oxygen (TV network)|Oxygen]] and also airs on the Canadian cable network, [[Outdoor Life Network|OLN]].

In the early shows, TAPS was headquartered in a trailer located behind Jason Hawes' house, and they drove one white van to investigations. Within one season, they had moved the entire operation to a storefront in [[Warwick, Rhode Island]], and acquired several new TAPS vehicles.

In addition to their successful television venture, TAPS operates a website where they share their stories, photographs, and [[ghost hunting]] videos with an ever-growing membership list. Because of the popularity of the show, TAPS cast members have signed contracts with at least two talent agencies, Escape Artistry and GP Entertainment, to manage their appearances at lectures, conferences and public events.

In addition to the success of the series, TAPS has ventured into the venue of radio broadcast, hosting a three-hour weekly show called ''Beyond Reality''. New episodes are broadcast every Saturday from 7 pm to 10 pm [[Eastern Time]], though sometimes may skip a week due to the possibility of the hosts being busy with other ventures. The radio show covers topics in a vast array of areas such as [[cryptozoology]], [[spiritualism]], [[ufology]], and [[ghost]]s. The show is hosted by Grant Wilson and Jason Hawes, and includes guest appearances from other TAPS members and special guests such as [[John Zaffis]], Rosemary Ellen Guiley, Chris Fleming, and others who specialize in certain fields. Noted paranormal author Jeff Belanger and "[[Spooky Southcoast]]" radio host and author [[Tim Weisberg (paranormal investigator)|Tim Weisberg]] served as fill-in hosts for Jason and Grant. The show also once simulcasted on "[[Spooky Southcoast]]," airing from the Mt. Washington Hotel in New Hampshire.

On March 3, 2010, ''Ghost Hunters''' 100th episode aired featuring their investigation of [[Alcatraz]] Prison. The two-hour special featured a live studio audience with question and answer segments, hosted by [[Josh Gates]] of ''[[Destination Truth]]''. The special also featured the ''[[Ghost Hunters International|GHI]]'' crew, the winning contestants of ''[[Ghost Hunters Academy]]'', and Craig Piligian, the creator and executive producer of ''Ghost Hunters''.

On June 2, 2011, Syfy announced renewing ''Ghost Hunters'' for an eighth season making the series the longest running reality series on Syfy.<ref>{{cite web|url=http://insidetvratings.com/2011/06/02/cancelled-renewed/ghost-hunters-renewed-for-season-8-by-syfy/|title="Ghost Hunters" Renewed For Season 8 By Syfy|publisher=|accessdate=October 1, 2014}}</ref>

On June 7, 2016, Jason Hawes announced that ''Ghost Hunters w''ill be concluding on Syfy with season 11 being the last season to be produced. The new network hasn't been announced.<ref>{{Cite web|url=https://www.facebook.com/notes/jason-hawestaps/ghost-hunters-leaving-syfy/10153794588723212|title=Ghost Hunters leaving Syfy!|website=www.facebook.com|access-date=2016-06-08}}</ref>

=====The Hunted Collector=====
{{Main|Haunted Collector}}

''Haunted Collector'' is an American television [[reality series]] that airs on the [[Syfy]] cable television channel. The first season premiered on June 1, 2011, <!-- Grammatically, a comma always follows the year when preceded by a month, day, and comma since the year is serving as a parenthetical. --> and ended on July 6, 2011. The series features a team of [[paranormal]] investigators led by [[demonologist]] [[John Zaffis]], who investigate alleged haunted locations with the hopes of identifying and removing any on-site artifacts or trigger objects that may be the source of the supposed paranormal or poltergeist activity in hopes that the activity in the location being investigated will be mitigated or cease altogether.  The artifact is then housed in [[John Zaffis']] paranormal artifact museum.

The production of the second season started in December 2011 and premiered on June 6, 2012.

On September 17, 2012, [[Syfy]] announced that the series was renewed for 12-episode third season, which premiered on March 6, 2013.<ref>{{cite web|title=Syfy Renews Hit Paranormal Series "Haunted Collector" for Third Season|url=http://www.thefutoncritic.com/news/2012/09/17/syfy-renews-hit-paranormal-series-haunted-collector-for-third-season-289002/20120917syfy01/|accessdate=24 November 2012}}</ref>

On November 8, 2013, Syfy announced that it had cancelled ''Haunted Collector''.

===Movies===
====Anabelle====
{{Main|Annabelle (film)}}

'''''Annabelle''''' is a 2014 American [[supernatural horror film]] directed by [[John R. Leonetti]], written by [[Gary Dauberman]] and produced by [[Peter Safran]] and [[James Wan]]. It is a [[prequel]] to 2013's ''[[The Conjuring]]'' and the second installment in [[The Conjuring Universe]]. The film was inspired by a story of a doll named [[Annabelle (doll)|Annabelle]] told by [[Ed and Lorraine Warren]].<ref name="Spin-Off">{{cite web |last=Reilly |first=Mark |title=''The Conjuring'' Gets a Spin-Off Movie with ''Annabelle''! |url=http://schmoesknow.com/the-conjuring-gets-a-spin-off-movie-with-annabell/ |accessdate=February 2, 2014 |work=Schmoes Know |date=November 8, 2013}}</ref> The film stars [[Annabelle Wallis]], [[Ward Horton]], and [[Alfre Woodard]].

''Annabelle'' premiered at the [[TCL Chinese Theatre]] in [[Los Angeles]] on September 29, 2014,<ref>{{cite web |url=http://www.upi.com/News_Photos/Entertainment/Annabelle-premiere-in-Los-Angeles/8613/ |title=Annabelle Premiere |work=[[United Press International]] |accessdate=September 30, 2014}}</ref> and was theatrically released in the United States on October 3, 2014.<ref name=release>{{cite web |title=Warner Bros Scheduling Spree Continues With ''The Conjuring 2'', ''Mean Moms'', 2 Others |url=http://www.deadline.com/2014/02/warner-bros-scheduling-spree-continues-with-the-conjuring-2-mean-moms-2-others/ |accessdate=February 26, 2014 |work=Deadline Hollywood |date=February 25, 2014}}</ref> The film received generally negative reviews from critics but was a box office success, grossing over $257{{nbsp}}million against its $6.5{{nbsp}}million production budget. A [[prequel]], titled ''[[Annabelle: Creation]]'', was released on August 11, 2017. A [[Untitled Annabelle film|currently untitled sequel]] will be released on June 28, 2019.

====The Amityville Horror====
{{Main|The Amityville Horror}}

<!--PLEASE note that the house is called 412 Ocean Avenue only in the films, see talk page.-->
On November 13, 1974, [[Ronald DeFeo Jr.]] shot and killed six members of his family at 112 Ocean Avenue, a large [[Dutch Colonial]] house situated in a suburban neighborhood in [[Amityville, New York|Amityville]], on the south shore of [[Long Island]], [[New York (state)|New York]]. He was convicted of [[second-degree murder]] in November 1975.

In December 1975, George and Kathy Lutz and their three children moved into the house. After 28 days, the Lutzes left the house, claiming to have been terrorized by [[paranormal]] phenomena while living there.<ref>{{cite web|url=http://abcnews.go.com/Primetime/story?id=132035&page=1&singlePage=true |title=Amityville Horror: Horror or Hoax? |publisher=[[ABC News (United States)|ABC News]]|accessdate=June 30, 2015}}</ref>

{{Main|List of films based on the Amityville haunting}}
The people and events fictionalized in ''The Amityville Horror'' have been the subject of a number of films (many of which share no connection other than the reference to Amityville):
* ''[[The Amityville Horror (1979 film)|The Amityville Horror]]'' (1979)
* ''[[Amityville II: The Possession]]'' (1982)
* ''[[Amityville 3-D]]'' (1983) (made in [[3-D film|3-D]] and has also been released as ''Amityville III: The Demon'')
* ''[[Amityville 4: The Evil Escapes]]'' (1989)
*''[[The Amityville Curse]]'' (1990)
* ''[[Amityville: It's About Time]]'' (1992)
* ''[[Amityville: A New Generation]]'' (1993)
* ''[[Amityville Dollhouse]]'' (1996)
* ''[[The Amityville Horror (2005 film)|The Amityville Horror]]'' (2005 remake)
* ''[[The Amityville Haunting]]'' (2011)
* ''[[The Amityville Asylum]]'' (2013)
* ''[[Amityville Death House]]'' (2015)
* ''[[The Amityville Playhouse]]'' (2015)
* ''[[Amityville: No Escape]]'' (2016) 
*[[Amityville: Vanishing Point]] (2016)
*[[The Amityville Legacy]] (2016)
*[[The Amityville Terror]] (2016)
*[[Amityville Prison]] (2017)
* ''[[Amityville: The Awakening]]'' (2017)
* ''The Amityville Murders'' (2018)

====The Conjuring====
{{Main|The Conjuring}}

'''''The Conjuring''''' is a 2013 American [[supernatural horror film]] directed by [[James Wan]] and written by [[Chad Hayes (writer)|Chad Hayes]] and [[Carey W. Hayes]]. It is the inaugural film in [[The Conjuring Universe]] franchise.<ref name="EW"/> [[Patrick Wilson (American actor)|Patrick Wilson]] and [[Vera Farmiga]] star as [[Ed and Lorraine Warren]], [[Ghost hunting|paranormal investigators]] and authors associated with prominent cases of [[haunting]]. Their purportedly real-life reports inspired ''[[The Amityville Horror]]'' story and [[The Amityville Horror (film series)|film franchise]].<ref>{{cite web|url=https://www.usatoday.com/story/life/movies/2013/07/22/conjuring-true-story-perron/2457209/|title=The 'true' story behind 'The Conjuring'|website=[[USA Today]]|first=Bryan|last=Alexander|date=July 22, 2013}}</ref> The Warrens come to the assistance of the Perron family, who experienced increasingly disturbing events in their farmhouse in [[Rhode Island]] in 1971.<ref>{{cite web|title=Vera Farming Spies Spirits In First The Conjuring Photos|url=http://www.cinemablend.com/new/Vera-Farmiga-Spies-Spirits-First-Conjuring-Photos-34148.html|website=Cinema Blend|accessdate=March 10, 2013}}</ref>

''The Conjuring'' was released in the United States and Canada on July 19, 2013, and received positive reviews from critics. It grossed over $319 million worldwide against its $20 million budget. A sequel, ''[[The Conjuring 2]]'', was released on June 10, 2016, with a third film currently in development.

====Ghostbusters====
{{Main|Ghostbusters}}

'''''Ghostbusters''''' is a 1984 American [[fantasy comedy]] film produced and directed by [[Ivan Reitman]] and written by [[Dan Aykroyd]] and [[Harold Ramis]]. It stars [[Bill Murray]], Aykroyd and Ramis as [[Peter Venkman]], [[Ray Stantz]] and [[Egon Spengler]], eccentric [[Parapsychology|parapsychologists]] who start a [[Ghost hunting|ghost-catching]] business in New York City. [[Sigourney Weaver]] and [[Rick Moranis]] co-star as their client [[Dana Barrett]] and her neighbor [[Louis Tully]].

Aykroyd conceived ''Ghostbusters'' as a project for himself and fellow ''[[Saturday Night Live]]'' alumnus [[John Belushi]], with the protagonists traveling through time and space. Aykroyd and Ramis rewrote the script following Belushi's death and after Reitman deemed Aykroyd's initial vision financially impractical. Filming took place from October 1983 to January 1984.

''Ghostbusters'' was released in the United States on June 8, 1984. It received positive reviews and grossed $242 million in the United States and more than $295 million worldwide, making it the highest-grossing comedy film of its time. At the [[57th Academy Awards]], it was nominated for [[Academy Award for Best Visual Effects|Best Visual Effects]] and [[Academy Award for Best Original Song|Best Original Song]] (for the [[Ghostbusters (song)|theme song]]). The [[American Film Institute]] ranked ''Ghostbusters'' 28th on its [[AFI's 100 Years...100 Laughs|100 Years...100 Laughs]] list of film comedies. In 2015, the United States [[Library of Congress]] selected the film for preservation in the [[National Film Registry]], finding it "culturally, historically, or aesthetically significant".<ref>{{cite web|url=http://www.hollywoodreporter.com/news/ghostbusters-top-gun-enter-national-849092|title='Ghostbusters,' 'Top Gun,' 'Shawshank' Enter National Film Registry|author=Mike Barnes|work=[[The Hollywood Reporter]]|date=December 16, 2015|accessdate=December 16, 2015}}</ref>

''Ghostbusters'' launched a [[Ghostbusters (franchise)|media franchise]], which includes a [[Ghostbusters II|1989 sequel]], two animated television series (''[[The Real Ghostbusters]]'' and ''[[Extreme Ghostbusters]]''), [[List of Ghostbusters video games|video games]], and a [[Ghostbusters (2016 film)|2016 reboot]].
The ''Ghostbusters'' concept was inspired by [[Dan Aykroyd]]'s fascination with the [[paranormal]].<ref name="AFI"/> His father wrote the book ''A History of Ghosts''.<ref name="The Making of a Comedy Classic">{{cite web| title=The Making of a Comedy Classic: Director Ivan Reitman Spills the Secrets Behind the Original 'Ghostbusters'| last=Galloway| first=Stephen| url=https://www.hollywoodreporter.com/features/ghostbusters-director-ivan-reitman-making-911408| date=July 15, 2016| work=The Hollywood Reporter| accessdate=December 18, 2018}}</ref> Aykroyd conceived ''Ghostbusters'' as a [[Star vehicle|vehicle]] for himself and his friend and fellow ''[[Saturday Night Live]]'' alumnus [[John Belushi]].{{sfn|Shay|1985|p=7}} Aykroyd also saw ''Ghostbusters'' as an opportunity to modernize the ghost films ''[[The Ghost Breakers]]'' (1940) and ''[[Ghost Chasers]]'' (1951).<ref name="Esquire"/> Around 1982, [[Ivan Reitman]], along with [[Joe Medjuck]] and [[Michael C. Gross]], had been working with [[Douglas Adams]] on an option for a [[The Hitchhiker's Guide to the Galaxy (film)|film adaptation]] of Adams' ''[[The Hitchhiker's Guide to the Galaxy]]''. As part of casting considerations for that film, Reitman suggested that [[Ford Prefect (character)|Ford Prefect]] be played by an American actor to help connect the British work to overseas audiences, and recommended Aykroyd or [[Bill Murray]]. During this process, Aykroyd presented Reitman with his script, which he felt was a better film, and Medjuck, Gross and himself postponed development of ''Hitchhiker's Guide'' to develop this script.<ref name="dwc">{{cite web | url = https://thedoctorwhocompanion.com/2017/03/09/star-wars-with-jokes-the-guide-to-the-hitchhikers-guide-to-the-galaxy-movie/ | title = Star Wars with Jokes: The Hitchhiker's Guide to the Galaxy Movie  | first=  Andrew | last= Reynolds | date = March 9, 2017 | accessdate = February 11, 2019 | work = The Doctor Who Companion }}</ref>

====Paranormal Activity====
{{Main|Paranormal Activity (film series)}}

'''''Paranormal Activity''''' is an American [[supernatural horror film|supernatural horror]] [[media franchise|franchise]] consisting of six films and additional media. Created by [[Oren Peli]], the [[Paranormal Activity|original film]] was widely released in 2007.

The films are based around a family [[haunted house|haunted]] by a demon that stalks, terrifies and ultimately murders several members of the family and other bystanders during the course of the films. The series makes use of production cameras set up and used like [[security cameras]] or other recording devices in an attempt to present the films as [[found footage (pseudo-documentary)|found footage]].  The series has received overall mixed reviews across all films.  The first and third films received generally positive critical reception, the second and fourth film received more lukewarm receptions, and the fifth and sixth received mostly negative receptions. The series is a strong financial success, making strong profits based on [[return on investment]]. The series as a whole has earned over thirty times the overall budget.

====Poltergeist====
{{Main|Poltergeist (film series)}}

''[[Poltergeist (1982 film)|Poltergeist]]'' is the original film in the trilogy, directed by [[Tobe Hooper]], co-written by [[Steven Spielberg]] and released on June 4, 1982. The story focuses on the Freeling family, which consists of Steven ([[Craig T. Nelson]]); Diane ([[JoBeth Williams]]); Dana ([[Dominique Dunne]]); Robbie ([[Oliver Robins]]); and Carol Anne ([[Heather O'Rourke]]), who live in a California [[housing development]] called Cuesta Verde, which comes to be [[Haunted house|haunted by ghosts]]. The ghosts communicate only with Carol Anne through the family's [[television set]], and are under the control of a [[demon]] known as the "Beast." The ghosts, attracted to Carol Anne's [[Energy (esotericism)|life force]] and believing she will help lead them into the "[[afterlife|Light]]", abduct her through her bedroom closet, which acts as a portal to their dimension. Most of the film involves the efforts to rescue her on the part of her family, a group of [[parapsychology|parapsychologist]]s and a spiritual [[mediumship|medium]] named Tangina Barrons ([[Zelda Rubinstein]]). Carol Anne is eventually retrieved from the other side and, following a second attack by the Beast that reveals the ghosts had originated from an improperly relocated [[cemetery]] underneath the neighborhood, the family flees Cuesta Verde, while the house caves in on itself and is sucked into another dimension.<ref name = "411mania">{{cite web |url=http://www.411mania.com/movies/columns/84476/A-Bloody-Good-Time-9.04.08:-Poltergeist-Franchise-Breakdown.htm |title=A Bloody Good Time 9.04.08: Poltergeist Franchise Breakdown |last=Lee |first= Joseph |publisher=411mania.com |date = 4 September 2008 |accessdate=26 February 2011}}</ref>

The first sequel, ''[[Poltergeist II: The Other Side]]'', directed by [[Brian Gibson (director)|Brian Gibson]] and released on May 23, 1986, is set a year following the events in ''Poltergeist'' and offers an alternate explanation of the ghosts' origin. The film also develops the identity and [[backstory]] of the Beast, who had lived during the 19th century as a religious [[zealot]] named Reverend Henry Kane ([[Julian Beck]]). Kane was the leader of a [[utopia]]n [[cult]], who in anticipation of the [[Eschatology|end of the world]], had sealed themselves in an underground cavern located directly below what later became the Freelings' property. Kane is anxious to possess Carol Anne in order to continue manipulating his followers after death. The ghosts follow and attack the Freelings at their current household. Aided by an [[Native Americans in the United States|American Indian]] [[shaman]] named Taylor ([[Will Sampson]]), the Freelings manage to escape from Kane and his followers a second time.<ref name = "411mania"/><ref>{{cite web |url=http://poltergeistonline.com/theyre-back-the-story-of-the-inevitable-sequel/ |title=They're Back: The Story of the Inevitable Sequel |last= Kelhoffrr |first = Josh |work=Poltergeist Online |date=23 June 2010}}</ref>

The final film in the original trilogy, ''[[Poltergeist III]]'', was directed and co-written by [[Gary Sherman (director)|Gary Sherman]] and released on June 10, 1988. In order to protect Carol Anne, the Freelings have sent her to temporarily live with her skeptic relatives, Pat and Bruce Gardner ([[Nancy Allen (actress)|Nancy Allen]] and [[Tom Skerritt]]) and their daughter Donna ([[Lara Flynn Boyle]]), who reside in a [[Chicago]] [[skyscraper]]. However, Carol Anne's recollection of her experiences during her [[psychiatric]] sessions enable Kane and his followers to locate her and make contact through the building's ubiquitous [[mirror]]s.<ref name="411mania"/><ref>{{cite web|url=http://poltergeistonline.com/spirits-in-the-city-the-third-and-final-sequel/|title=Spirits in the City: The Third and Final Sequel|last=Kelhoffrr|first=Josh|work=Poltergeist Online|date=23 June 2010}}</ref> After the ghosts abduct Carol Anne, then Donna, her boyfriend Scott (Kipley Wentz), Pat, and Bruce enlist the help of Tangina to retrieve them, who eventually sacrifices herself to save the family by escorting Kane into the Light.

The reboot of the series, ''[[Poltergeist (2015 film)|Poltergeist]]'', was directed by [[Gil Kenan]] and released on May 22, 2015. It centers on a family struggling to make ends meet, relocates to a suburban home and, like the original, the youngest daughter is kidnapped by spirits that possess the house. [[Sam Rockwell]] and [[Rosemarie DeWitt]] star as the married couple, Kennedi Clements plays the daughter, and [[Jared Harris]] plays the host of a paranormal-themed TV show who comes to the aid of the family.

''The Curse of Poltergeist,'' a [[documentary film]] based on the mystery of the franchise, was set to begin shooting in November 2015. The upcoming film will be directed by [[Adam Ripp]] and will be financed and produced by his company Vega Baby, alongside Indonesia-based MD Pictures. The documentary will focus on the life and experiences of actor [[Oliver Robins]], who played Robbie Freeling in the first and second installment of the franchise, as a way to explore the tragedies that have befallen those involved with the films.<ref>{{cite web|url=http://www.hollywoodreporter.com/news/poltergeist-movie-curse-documentary-explore-830368|title=Documentary to Explore 'Poltergeist' Movie Curse|author=Mia Galuppo|work=[[The Hollywood Reporter]]|publisher=([[Prometheus Global Media]])|date=October 7, 2015|accessdate=October 8, 2015}}</ref>

==Methods and equipment==
[[File:Irthermo.png|thumb|200px|A handheld infrared thermometer of the type used by some ghost hunters]]

Ghost hunters use a variety of techniques and tools to investigate alleged paranormal activity.<ref>{{cite web|url=http://www.maggwire.com/ghost-hunting-equipment/|title=Ghost Hunting Equipment: Tools To Get Rid Of Demons by Amy Bruni|publisher=Maggwire|last=Tung|first=Christen|date=September 7, 2016}}</ref><ref>{{cite web|url=http://ghosthuntingblog.theauthorityon.com/ghost-hunting-equipment-a-checklist/|title=Ghosts Hunting Equipment Checklist}}</ref>
While there is no universal acceptance among ghost hunters of the following methodologies, a number of these are commonly used by ghost hunting groups.<ref name="sfgate">{{cite web|url=http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/10/31/BUGDCFFS8Q1.DTL|title=Ghost hunters utilize latest in technology|last=Kirby|first=Carrie|date=October 31, 2005|work=[[San Francisco Chronicle]]|location=San Francisco}}</ref>
* [[still image|Still]] [[spirit photography|photography]] and [[video camera|video]]: using [[digital camera|digital]], [[night vision]], [[infrared photography|infrared]], and even [[disposable camera]]s.
* EMF meter: to detect possibly unexplained fluctuations in electromagnetic fields.
* [[tablet computer|Tablet PC]]: to record data, audio, video and even environmental fluctuations such as electromagnetic fields.<ref name="sfgate" />
* [[Ambient temperature]] measurement: using [[thermographic camera]]s, [[thermal imaging camera]]s, [[infrared thermometer]]s, and other [[infrared]] temperature sensors. All of these methods only measure surface temperature and not ambient temperature.<ref>{{cite web|url=http://www.infraredtraining.com/ir_primer.asp |title=IR Thermography Primer Answers to the Common Questions People Ask about IR Thermography |publisher=ITC Infrared Training Center |date=2010-08-21 |accessdate=2011-03-06}}</ref>
* Digital and [[analog recording|analog]] [[audio recording]]: to capture any unexplained noises and [[electronic voice phenomena]] (EVPs), that may be interpreted as disembodied voices.
* [[Compass]]: some ghost hunters use a compass to determine the location of paranormal spots, similar to [[Electromagnetic field|EMFs]].
* [[Geiger counter]]: to measure fluctuations in radiation.
* [[Infrared]] and/or [[ultrasonic sensor|ultrasonic]] [[motion sensor]]s: to detect possible anomalous movement within a given area, or to assist in creating a controlled environment where any human movement is detected.
* Air quality monitoring equipment: to assess the levels of gases such as [[carbon monoxide]], which are thought to contribute to reports of [[paranormal]] activity.
* [[Infrasound]] monitoring equipment: to assess the level of sound vibrations.
* [[Dowsing rod]]s: usually constructed of brass and bent into an L-shape.
* [[Psychic]]s, [[mediumship|mediums]], or [[clairvoyant]]s: trance mediums or "[[Sensitive (pseudoscience)|sensitive]]" individuals thought to have the ability to identify and make contact with spiritual entities.
* [[Demonologist]]s, [[exorcist]]s, and [[clergy]]: individuals who may say [[prayer]]s, give [[blessing]]s, or perform [[rituals]] for the purpose of cleansing a location of alleged [[ghost]]s, [[demon]]s, [[poltergeist]]s, or "[[negative energy]]".
* Lights out: according to ghost hunting enthusiast websites, many ghost hunters prefer to conduct their investigations during "peak" evening hours (midnight to 4 a.m.).
* Ghost Box: an electronic device that some ghost hunters claim allows communication with spirits.
* [[Interview]]s: collecting testimony and accounts about alleged hauntings.
* [[Research|Historical research]]: researching the [[history]] behind the site being investigated.
* A [[Ouija]] board to communicate with spirits.
* According to a psychic medium, "dogs growling and barking at certain places on a property" and cats gravitating or looking into a particular area as if someone were present are believed to indicate a haunting.<ref>{{cite web|last1=Challis|first1=Carla|title=8 spooky signs that your home might be haunted|date=18 May 2018|url=https://home.bt.com/lifestyle/house-home/home-hacks/signs-home-is-haunted-11364012395049|accessdate=7 February 2019}}</ref>

===Cold spots===
According to ghost hunters, a cold spot is an area of localized [[coldness]] or a sudden decrease in [[ambient temperature]]. Many ghost hunters use digital thermometers or heat sensing devices to measure such temperature changes. Believers claim that cold spots are an indicator of paranormal or spirit activity in the area; however there are many natural explanations for rapid temperature variations within structures, and there is no scientifically confirmed evidence that spirit entities exist or can affect air temperatures.<ref name="Nickell">{{cite journal|authorlink = Joe Nickell|last1=Nickell|first1=Joe|title=Investigative Files – Ghost Hunters|journal=Skeptical Inquirer|date=September–October 2006|volume=30|issue=5 |url=http://www.csicop.org/si/show/ghost_hunters|accessdate=7 June 2016}}</ref>

==="Orbs"===
Some ghost hunters claim that circular artifacts appearing in photographs are [[spirit photography|spirits of the dead]] or other paranormal phenomena,<ref name=Wagner>{{cite web|url=https://www.thoughtco.com/enough-with-the-orbs-already-2594045|title=Why Orbs in Pictures Are Not Proof of the Paranormal|last=Wagner|first=Stephen|date=29 January 2017|accessdate=27 June 2017|website=ThoughtCo}}</ref><ref>{{cite book|url=https://books.google.com/books?id=spdncZr4kncC&dq=orb+fluorescence&pg=PA35|last1=Heinemann|first1=Klaus|last2=Ledwith|first2=Miceal|title=The Orb Project|publisher=Beyond Words Publishing|year=2007|page=23|accessdate=27 June 2017|isbn=9781416575535}}</ref><ref>{{cite journal |last1=Radford |first1=Benjamin |authorlink1=Benjamin Radford |title=Orbs as Plasma Life |journal=[[Skeptical Inquirer]] |date=2017 |volume=41 |issue=5 |pages=28–29|subscription=yes}}</ref> however, such [[Backscatter#In photography|visual artifacts]] are a result of [[Flash (photography)|flash photography]] illuminating a mote of dust or other particle, and are especially common with modern [[Digital camera#Compacts|compact and ultra-compact digital cameras]].<ref name="Fuji">{{cite web|title=Flash reflections from floating dust particles|url=http://home.fujifilm.com/products/digital/shooting/flash.html|website=Fujifilm.com|publisher=Fuji Film|accessdate=19 June 2017|archiveurl=https://web.archive.org/web/20050727000507/http://home.fujifilm.com/products/digital/shooting/flash.html|archivedate=July 27, 2005}}</ref><ref name="Baron2008">Cynthia Baron. ''[https://books.google.com/books?id=1c8LAAAAQBAJ&pg=PA310 Adobe Photoshop Forensics: Sleuths, Truths, and Fauxtography]''. Cengage Learning; 2008. {{ISBN|1-59863-643-X}}. p. 310.</ref><ref name="Nickell2010">Joe Nickell. ''[https://books.google.com/books?id=r2twpqtZOd0C&pg=PA159 Camera Clues: A Handbook for Photographic Investigation]''. University Press of Kentucky; 12 September 2010. {{ISBN|0-8131-2691-6}}. p. 159.</ref><ref>{{Skeptoid | id=4029 | number=29 | title=Orbs: The Ghost in the Camera|accessdate=June 15, 2017|date=February 24, 2007}}</ref>

==See also==
* [[Legend tripping]]
* [[Residual haunting]]
* [[Paranormal television]]
* [[List of ghost films]]
* [[List of topics characterized as pseudoscience]]

==References==
{{Reflist|30em}}

==External links==
* {{Skeptoid|id=4081|number=81|title=Ghost Hunting Tools of the Trade}}
* [http://www.skepticblog.org/2010/11/08/ghost-hunting-science-vs-pseudoscience/ "Ghost Hunting Science Vs Pseudoscience"] by [[Steven Novella]]
{{pseudoscience}}
{{Ghosts}}

[[:Category:Ghosts]]
[[:Category:Paranormal investigators| ]]
[[:Category:Parapsychology]]
[[:Category:Pseudoscience]]
[[:Category:Hobbies]]

{{DEFAULTSORT:Ghost Hunting}}