Calificación
Reparto

Jon Pertwee
The Doctor

Katy Manning
Jo Grant

Nicholas Courtney
Brigadier Lethbridge-Stewart

Richard Franklin
Captain Mike Yates

John Levene
Sergeant Benton

Roger Delgado
The Master

Paul Grist
Bill Filer

Peter Bathurst
Chinn

Fernanda Marlowe
Corporal Bell

Donald Hewlett
George Hardiman

David Savile
Winser

Derek Ware
Pigbin Josh

Bernard Holley
Axon Man

Michael Walker
1st Radio Operator

David March
2nd Radio Operator

Patricia Gordino
Axon Woman