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directed by Christopher Barry
Streaming availability varies by region.
Search all platforms βThe newly-regenerated Doctor helps UNIT battle a sentient robot being manipulated by a corrupt scientific organization.

Tom Baker
The Doctor

Elisabeth Sladen
Sarah Jane Smith

Ian Marter
Harry Sullivan

Nicholas Courtney
Brigadier Lethbridge-Stewart

John Levene
RSM Benton

Patricia Maynard
Miss Winters
Michael Kilgarriff
The Robot

Edward Burnham
Professor Kettlewell
Director
Christopher Barry
Language
EN