WARNING TO CROOKS...DON'T FOOL WITH THE U. S. MAIL!

Investigators set out to capture a gang of thieves transporting stolen cash through the U.S. mail.

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Main Cast: Lee Tracy, Gloria Stuart, Ann Shepherd, John McGuire, Frank M. Thomas, Paul Guilfoyle, Irene Franklin, Patricia Wilder, Barbara Pepper, Willard Robertson

Director: Edward Killy

Writers: John Twist, Edmund L. Hartmann

Editor: Ted Cheesman

Cinematographer: Robert De Grasse

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