Ηθοποιοί επεισοδίου
Francis MatthewsCaptain Scarlet (voice)
Ed BishopNarrator / Captain Blue (voice)
Donald GrayThe Mysterons / Colonel White / Captain Black (voice)
Cy GrantLieutenant Green (voice)
Sylvia AndersonReceptionist (voice)
Charles TingwellLieutenant Dean (voice)
Jeremy WilkinCaptain Ochre / Dr. Kurnitz / Human Captain Black (voice)