

Classic Doctors, ancient evil, and a locked room that shouldn't exist — Who fan service done RIGHT.
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 harboring the killer? What is the centuries-old horror hidden in the grounds? And what exactly is the secret of room zero?
Acting
Caroline John's commanding return as the brilliant Liz Shaw.
Direction
Baggs squeezing BBC-level atmosphere from micro-budget.

Director
Bill Baggs
Trivia, insights & behind the scenes
This was the first of four PROBE direct-to-video films, spun off from a failed 1990s Doctor Who revival pitch. Jon Pertwee's final on-screen performance as any version of his Doctor character.
Mark Gatiss appears here years before writing for the 2005 revival; the film represents a crucial bridge between classic fandom and professional production. The 'zero room' concept later resurfaced in official canon.