Lieutenant Braden discovers that Sally, the woman he's been falling in love with, has actually been checking out his qualifications to be a U.S. Navy frogman. He must put his personal life behind him after being assigned to be smuggled into a Japanese-held island via submarine to photograph radio codes.
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| Writing | Robb White | Novel |
| Costume & Make-Up | Gordon Bau | Makeup Supervisor |
| Art | Jack T. Collis | Art Direction |
| Sound | Ray Heindorf | Music Supervisor |
| Crew | Charles A. Lockwood | Technical Advisor |
| Sound | Francis E. Stahl | Sound |
| Editing | John F. Schreyer | Editor |
| Writing | Richard H. Landau | Screenplay |
| Camera | Carl E. Guthrie | Director of Photography |
| Directing | Gordon Douglas | Director |
| Production | Aubrey Schenck | Producer |
| Art | William Wallace | Set Decoration |
| Directing | C.M. Florance | Assistant Director |
