TARDIS Index File

The Zero Imperative

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This article is written from a real world point of view
The Zero Imperative
Main character(s): Elizabeth Shaw
Featuring: Preternatural Research Bureau
Main setting: Earth, London
Key crew
Publisher: BBV Productions
Writer: Mark Gatiss
Director: Bill Baggs
Producer: Andy Grant
Release details
Release date: 1994
Format: 60 minute, VHS
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The Zero Imperative was the first BBV Productions video-released film to feature Caroline John reprising her role as Elizabeth Shaw. This was also the first story to introduce PROBE – the Preternatural Research Bureau which would feature in the four BBV Productions PROBE films.


Former UNIT luminary Liz Shaw and her assistant Lou 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?


to be added


Production crew


  • Among the items on Jeremiah O'Kane's shelves are the videos Nightshade, Nightshade 2 and Nightshade and the Imps, serials or (more likely) movie adaptations in the Nightshade series which originally starred Edmund Trevithick.
  • While discussing the group similar to PROBE she was once a part of, Liz sees a picture of The Brigadier on a wall and begins drawing on it with makeup.

Story notes


to be added

Filming Locations

to be added

Discontinuity, Plot Holes, Errors

to be added


DVD, video, and Other releases

to be added

See also

External links


  1. Mark Gatiss (23 January 2008). Author's Notes - Introduction. Doctor Who - Classic Series - Ebooks. BBC. Archived from the original on 23 January 2008. “A year or so later when I was making The Zero Imperative with Bill Baggs, Gary Gillett mocked up some videos that can just be made out on Jon Pertwee's shelves.”

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