Blake's 7 : Ultraworld (1980)
Directed by Vere Lorrimer
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Synopsis by Hal Erickson
The crew of the Liberator lands upon what appears to be an uncharted planet. The disturbing telepathic reaction of Cally (Jan Chappell) is the first clue that this gigantic "world" is actually a huge computer, which remains alive by sapping the intellects of others. Not surprisingly, the computer sets its sights on the "inner workings" of Cally and her comrades, Dayna (Josette Simon), Avon (Paul Darrow), and Tarrant (Steven Pacey). "Ultraworld" was originally broadcast on March 10, 1980.