The Zero Imperative

01 – "The Zero Imperative"
episode
Cast
Starring Caroline John – Liz Shaw Louise Jameson – Patricia Haggard
Others Linda Lusardi – Louise Bayliss Jon Pertwee – Dr. O'Kane Sylvester McCoy – Dr. Dove Colin Baker – Peter Russell Mark Gatiss - Dr. Bruffin David Terence – Patient Zero Nicola Fulljames – Dr. Hearst Patricia Merrick - Dr. Gilchrist Jonathan Rigby - Cummings Sophie Aldred - P.R.O. Simon Messingham - Orderly Alexander Kirk - Orderly Peter Davison - Patient One Bill Baggs - Daniel Daniel Mills - Boy's Voice
Production
Directed by	Bill Baggs
Written by	Mark Gatiss
Produced by	Bill Baggs
Executive producer(s)	Andy Grant
Production code	1.0
Running time	60 minutes
First broadcast	1994
Chronology
← Preceded by — Followed by → The Devil of Winterborne

Synopsis

Former UNIT luminary Liz Shaw and her assistant Bayliss are investigating a series of bizarre murders, all committed near a soon-to-be-closed psychiatric hospital.

When the hospital is unexpectedly reprieved by rich Industrialist Peter Russell events seem to move out of Liz's control. Are the incumbent director of the clinic, Doctor Dove and his predecessor Doctor O'Kane harbouring the killer? What is the centuries-old horror hidden in the grounds?

And what exactly is the secret of room zero?

Story notes

• This film marks the debut of the Preternatural Research Bureau (PROBE) and the return of Caroline John as Liz Shaw. Other actors from Doctor Who -- including John's former co-star Jon Pertwee -- also appear, but in different roles.
• This is the first of four films featuring the PROBE organization. As such, it predates Torchwood as the first ongoing spin-off of the Doctor Who universe.

See also

• Torchwood

External links

to be added