출연진

• 

  Jon Pertwee

  Jon Pertwee

  The Doctor

• 

  Katy Manning

  Katy Manning

  Jo Grant

• 

  Nicholas Courtney

  Nicholas Courtney

  Brigadier Lethbridge-Stewart

• 

  John Levene

  John Levene

  Sergeant Benton

• 

  Richard Franklin

  Richard Franklin

  Captain Mike Yates