Calificación
Reparto

William Hartnell
The Doctor

Peter Purves
Steven Taylor

Jackie Lane
Dodo Chaplet

Eric Elliott
Commander

Inigo Jackson
Zentos

Roy Spencer
Manyak

Michael Sheard
Rhos

Kate Newman
Mellium

Ian Frost
Baccu

Stephanie Heesom
Guardian

Paul Greenhalgh
Guardian

Edmund Coulter
Monoid

Frank George
Monoid

Ralph Carrigan
Monoid

John Caesar
Monoid

Roy Skelton
Monoid Voice