Released:
1970-05-02

Overview:
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.

Director:
Michael Ferguson

Runtime:
2h 55min

Genre:
Science Fiction, Drama, Adventure

• Cast:
• 
  Jon Pertwee
  as
  The Doctor
• 
  Caroline John
  as
  Liz Shaw
• 
  Nicholas Courtney
  as
  Brigadier Lethbridge-Stewart
• 
  Ronald Allen
  as
  Ralph Cornish
• 
  John Abineri
  as
  Carrington