The Doctor, Jamie and Zoe return to Earth and become embroiled in the schemes of Tobias Vaughn. They meet up with an old friend, Colonel (now Brigadier) Lethbridge-Stewart, and some old enemies, the Cybermen.

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Main Cast: Patrick Troughton, Frazer Hines, Wendy Padbury, Kevin Stoney, Nicholas Courtney, Edward Burnham, Sally Faulkner, Peter Halliday, Geoffrey Cheshire, Ian Fairbairn

Director: Douglas Camfield

Writers: Derrick Sherwin, Kit Pedler

Editor:

Cinematographer:

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