Recruited by the Russians during their days at Cambridge, three young Englishmen rise to become high-ranked MI5 agents until their exposure in 1949.

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Main Cast: Anthony Bate, Derek Jacobi, Michael Culver, Ingrid Hafner, Elizabeth Seal, Richard Hurndall, Philip Stone, Peter Vaughan, Arthur Lowe, Bernard Archard

Director: Gordon Flemyng

Writer: Ian Curteis

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Cinematographer:

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