출연진
Tom Baker
The Doctor
Paul Jones
The Doctor (voice)
Lalla Ward
Romana
David Brierly
K9 (voice)
John Leeson
K9 (voice)
Christopher Neame
Skagra
Denis Carey
Chronotis
Steven O'Donnell
Chronotis (voice)
Daniel Hill
Chris Parsons
Victoria Burgoyne
Clare Keightley
Gerald Campion
Wilkins
Shirley Dixon
Voice of the Computer (voice)
James Coombes
Krarg
Graham Cole
Krarg 2
Harry Fielder
Krarg 3
John Hallet
Police Constable
Derek Pollitt
Professor Caldera