The newly-regenerated Doctor helps UNIT battle a sentient robot being manipulated by a corrupt scientific organization.

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Main Cast: Tom Baker, Elisabeth Sladen, Ian Marter, Nicholas Courtney, John Levene, Patricia Maynard, Michael Kilgarriff, Edward Burnham, Alec Linstead, Timothy Craven

Director: Christopher Barry

Writer: Terrance Dicks

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Cinematographer:

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