London, 1985. The alien mercenary Lytton has been stranded here for nearly a year, but now he has a plan to escape. But how does it involve the Doctor's old enemies - and why are they on Earth at this point in history?
Quest roles:
Terry Molloy(Davros), Maurice Colbourne(Lytton), Michael Kilgarriff(Cyberman Controller), Michael Attwell(Bates), Brian Glover(Griffiths), Stephen Churchett(Bill), Cy Town(Dalek Operator)