Doctor Who (1963)
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Jay Neill as Silvey
Episodes 1
The Invisible Enemy (1)
October 1, 1977
• 25m
15x5
Deep space, 5000AD. An Earth supply shuttle is infected by a strange sentient space-borne virus, which quickly spreads to the crew of the refuelling station on the moon Titan. Even worse, the Doctor himself falls victim. But why is Leela immune, and what is the virus's ultimate goal?
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