On Jupiter's moon Ganymede, an alien life-form has taken over the body of a human astronaut, creating an almost perfect copy. It then begins the long return journey to Earth.
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On Jupiter's moon Ganymede, an alien life-form has taken over the body of a human astronaut, creating an almost perfect copy. It then begins the long return journey to Earth.
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Alexander Davion , David Hemmings , Charles Tingwell
George Spenton-Foster
BBC TV ,
as Dr. Crawford
as Roger Westcott
