The TARDIS arrives in 2070 on the Moon, where a weather control station under the command of a man named Hobson is in the grip of a plague epidemic — in reality the result of an alien poison planted by the Cybermen. Jamie is knocked unconscious and lapses into a delirium, leaving the Second Doctor, Ben, and Polly to fight off a massive Cyberman attack.
Patrick Troughton
as The Doctor
Anneke Wills
as Polly
Michael Craze
as Ben Jackson
Frazer Hines
as Jamie McCrimmon
Patrick Barr
as Hobson
André Maranne
as Benoit
Michael Wolf
as Nils
John Rolfe
as Sam
Mark Heath
as Ralph
Alan Rowe
as Voice from Space Patrol/Dr. Evans
Denis McCarthy
as Voice of Rinberg
Barry Ashton
as Scientist
