During the Cold War, diplomatic courier Mike Kells must retrieve a dispatch containing top-secret intelligence. But when he arrives at the meeting point, a train station in Salzburg, his contact turns up dead, and the message is nowhere to be found. With no clear suspect in sight, Kells must sort through his uncertain relationships with two women, while sidestepping the pitfalls of subterfuge, sabotage and spies in his search for the documents.
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| Directing | Henry Hathaway | Director |
| Writing | Liam O'Brien | Screenplay |
| Writing | Casey Robinson | Screenplay |
| Writing | Peter Cheyney | Novel |
| Camera | Lucien Ballard | Director of Photography |
| Sound | Sol Kaplan | Original Music Composer |
| Costume & Make-Up | Charles LeMaire | Costume Design |
| Editing | James B. Clark | Editor |
| Production | Casey Robinson | Producer |
| Art | John DeCuir | Art Direction |
| Art | Lyle R. Wheeler | Art Direction |
| Costume & Make-Up | Ben Nye | Makeup Artist |
| Sound | Roger Heman Sr. | Sound |
| Sound | W. D. Flick | Sound |
| Costume & Make-Up | Elois Jenssen | Costume Design |
