The Doctor, Williams and the Draconian Prince head to the Ogrons' planet to find evidence of the Master's actions but the Master tricks Jo into leading them into a trap.
Quest roles:
John Scott Martin(Nucleus), Murphy Grumbar(Dalek Operator), Michael Kilgarriff(Second Ogron), Michael Wisher(Daleks (voice)), Roger Delgado(The Master), Stephen Thorne(First Ogron), Rick Lester(Third Ogron), Peter Birrel(Draconian Prince), Bill Mitchell(Newscaster), Stanley Price(Pilot), Cy Town(Dalek Operator), Vera Fusek(President of Earth), Michael Hawkins(General Williams)