Astronauts rescued from a mission to mars are kidnapped when they arrive back on earth. They seem to have been irradiated, and can now kill people merely by touching them. But the Doctor discovers the astronauts have been replaced with Alien ambassadors who are being forced to behave in a hostile manner. With The Doctor traveling to the alien mother ship, and Liz kidnapped, The Brigadier is left wondering who to trust.
Genre: Science Fiction, Drama, Adventure
Stars: Jon Pertwee, Caroline John, Nicholas Courtney, Ronald Allen, John Abineri, Robert Cawdron
Crew: Barry Letts (Producer), Michael Ferguson (Director), David Whitaker (Writer), Dudley Simpson (Music)
Country: United Kingdom
Language: English
Studio: BBC
Runtime: 175 minutes
Quality: HD
Released: May 02, 1970
IMDb: 4.5
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