The Master joins forces with The Sea Devils to take over the world, unless The Doctor and The Royal Navy can stop them.

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Main Cast: Jon Pertwee, Roger Delgado, Katy Manning, Edwin Richfield, Clive Morton, June Murphy, Donald Sumpter, David Griffin, Hugh Futcher, Royston Tickner

Director: Michael E. Briant

Writer: Malcolm Hulke

Editor:

Cinematographer:

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