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An FBI agent works with a refugee scientist and the Coast Guard to crack a Soviet spy ring in Boston.

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Main Cast: George Murphy, Finlay Currie, Virginia Gilmore, Karl Stepanek, Louisa Horton, Peter Capell, Bruno Wick, Vilma Kurer, Ann Thomas, George Roy Hill

Director: Alfred L. Werker

Writers: Leo Rosten, J. Edgar Hoover

Editor: Angelo Ross

Cinematographer: Joseph C. Brun

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