Calificación
Reparto

Jon Pertwee
The Doctor

Elisabeth Sladen
Sarah Jane Smith

Nina Thomas
Queen Thalira

Frank Gatliff
Chancellor Ortron

Rex Robinson
Gebek

Ralph Watson
Ettis

Graeme Eton
Preba

Michael Crane
Blor

Terry Walsh
Guard Captain

Max Faulkner
Miner

Roy Evans
Miner

Nick Hobbs
Aggedor

Donald Gee
Eckersley

Stuart Fell
Body of Alpha Centauri

Ysanne Churchman
Voice of Alpha Centauri

Alan Bennion
Azaxyr