출연진
Jon Pertwee
The Doctor
Caroline John
Liz Shaw
Nicholas Courtney
Brigadier Lethbridge-Stewart
Hugh Burden
Channing
Hamilton Dyce
Major General Scobie
Antony Webb
Dr. Henderson
Neil Wilson
Seeley
Talfryn Thomas
Mullins
John Breslin
Captain Munro
John Woodnutt
Hibbert
Derek Smee
Ransome
Henry McCarthy
Dr. Beavis
Betty Bowden
Meg
Allan Mitchell
Wagstaffe
Robin Squire
Auton Scount / UNIT Driver
David Dewhurst
Private Hawkins