The F.B.I.'s own tense, terrific story behind the protection of the ATOMIC BOMB!

The US Government tries to track down embedded Nazi agents in the States.

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Main Cast: William Eythe, Lloyd Nolan, Signe Hasso, Gene Lockhart, Leo G. Carroll, Lydia St. Clair, William Post Jr., Harry Bellaver, Reed Hadley, Kenneth Konopka

Director: Henry Hathaway

Writers: John Monks Jr., Barré Lyndon, Charles G. Booth

Editor: Harmon Jones

Cinematographer: Norbert Brodine

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