When Barry Corvall discovers that his new bride is a possible enemy agent, he resigns from the diplomatic service to go undercover to route out an espionage ring planning to destroy American industrial capability.
| Writing | Warren Duff | Screenplay |
| Directing | Lloyd Bacon | Director |
| Camera | Charles Rosher | Director of Photography |
| Editing | Ralph Dawson | Editor |
| Writing | Frank Donoghue | Screenplay |
| Art | Carl Jules Weyl | Art Direction |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Writing | Michael Fessier | Screenplay |
| Sound | Adolph Deutsch | Original Music Composer |
| Writing | Robert Buckner | Original Story |
| Crew | James Hilton | Additional Dialogue |
| Production | Louis F. Edelman | Associate Producer |
| Production | Hal B. Wallis | Executive Producer |
| Production | Jack L. Warner | Executive In Charge Of Production |
| Production | Jack Saper | Unit Manager |
| Sound | Francis J. Scheid | Sound |
| Directing | Elmer Decker | Assistant Director |
| Crew | Jo Graham | Other |
| Sound | Adolph Deutsch | Conductor |
| Sound | Leo F. Forbstein | Music Director |
| Costume & Make-Up | Milo Anderson | Wardrobe Supervisor |
| Costume & Make-Up | Howard Shoup | Wardrobe Coordinator |