Jon Pertwee
The Doctor
Acting
Caroline John
Liz Shaw
Acting
Nicholas Courtney
Brigadier Lethbridge-Stewart
Acting
Hugh Burden
Channing
Acting
Hamilton Dyce
Major General Scobie
Acting
Antony Webb
Dr. Henderson
Acting
Neil Wilson
Seeley
Acting
Talfryn Thomas
Mullins
Acting
John Breslin
Captain Munro
Acting
John Woodnutt
Hibbert
Acting
Derek Smee
Ransome
Acting