The film is based on the actual events of the Portland Spy Ring trial in the U.K. A disgruntled Navy Clerk is transferred to a secret research establishment and is subsequently black-mailed/paid by Czech intelligence to procure secrets for them. He seduces the secretary who controls the most secret documents, and they enjoy the fruits of their treachery until the British authorities begin to close in on them.

Release Date : Mar 23, 1964

Genres : , ,

Production Company : British Lion Films

Production Countries : United Kingdom

Original Language : English

Casts : Bernard Lee, William Sylvester, Margaret Tyzack, David Kossoff, Nancy Nevinson, Thorley Walters, Gillian Lewis, Newton Blick, Philip Latham, Cyril Chamberlain, Justine Lord

Director :

Status : Released

Budget : 0

Revenue : 0

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