The Doctor and Sarah meet up with Bellal, who helps them escape from the Daleks and explains the origin of the City.
Quest roles:
John Scott Martin(Dalek Operator), Murphy Grumbar(Dalek Operator), Terry Walsh(Doran (uncredited)), Michael Wisher(Magrik), Roy Heymann(Gotal), Duncan Lamont(Dan Galloway), Julian Fox(Peter Hamilton), Joy Harrison(Jill Tarrant), Arnold Yarrow(Bellal), Cy Town(Haemovore (uncredited))