BBC2 airs the 25th episode of science fiction anthology series Out Of The Unknown. Adapted by Robert Muller from a story by Isaac Asimov, the story stars David Healy as Powell and Brian Davies as Donovan. This episode no longer exists in the BBC’s archives, and marks the end of Irene Shubik’s tenure as producer, as well as the last episode of the series to be made in black & white. The robot costumes from this story will be reused in the later Doctor Who story The Mind Robber.
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