Release Date

02 May, 1970

Runtime

02:55: (HH:MM)

Synopsis

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.

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Actors

Jon Pertwee

Caroline John

Nicholas Courtney

Ronald Allen

John Abineri

Robert Cawdron

Michael Wisher

Cheryl Molineaux

Ray Armstrong

Robert Robertson

Ric Felgate

Dallas Cavell

Bernard Martin

John Moreno

James Haswell

Derek Ware

William Dysart

Cyril Shaps

Gordon Sterne

Steve Peters

Neville Simons

Crew

Dudley Simpson

Barry Letts

Michael Ferguson

David Whitaker