Crew
Douglas Camfield
Director
Robert Banks Stewart
Writer
Philip Hinchcliffe
Producer
Geoffrey Burgon
Original Music Composer
Cast
Tom Baker
The Doctor
Elisabeth Sladen
Sarah Jane Smith
Tony Beckley
Harrison Chase
KG
Kenneth Gilbert
Richard Dunbar
MB
Michael Barrington
Sir Colin Thackeray
SC
Sylvia Coleridge
Amelia Ducat
John Challis
Scorby
Mark Jones
Arnold Keeler / Krynoid (voice)
SG
Seymour Green
Hargreaves
MM
Michael McStay
Derek Moberley
HR
Hubert Rees
John Stevensen
JG
John Gleeson
Charles Winlett
