Series: Doctor Who
Season: Season 4
Episode Number: 8
Air Date:
Duration: 25 min
The Cybermen take over the base again, apparently to stop the humans using the Z-Bomb, but then the Doctor realises they intend to use it themselves to destroy Earth.
Derek Martinus
Director
William Hartnell
The Doctor
Anneke Wills
Polly
Michael Craze
Ben
Robert Beatty
General Cutler
Steve Plytas
Wigner
Christopher Matthews
Radar Technician
Reg Whitehead
Jarl
Roy Skelton
Cyberman (voice)
Peter Hawkins
Cybermen (voice)