A Cornish fisherman becomes involved with Iron Curtain spies.

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Main Cast: Donald Houston, Fay Compton, Anton Diffring, Allan Cuthbertson, Delphi Lawrence, William Hartnell, John Blythe, Robert Shaw

Director: Anthony Squire

Writers: Kem Bennett, Anthony Squire

Editor: Peter R. Hunt

Cinematographer: Kenneth Talbot

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