Al Goddard, a detective who works for the United States Postal Inspection Service, is assigned to arrest two criminals who've allegedly murdered a U.S. postal detective.
| Directing | Lewis Allen | Director |
| Writing | Richard L. Breen | Writer |
| Writing | Warren Duff | Writer |
| Production | Robert Fellows | Producer |
| Sound | Victor Young | Original Music Composer |
| Camera | John F. Seitz | Director of Photography |
| Editing | LeRoy Stone | Editor |
| Art | Hans Dreier | Art Direction |
| Art | Albert Nozaki | Art Direction |
| Art | Sam Comer | Set Decoration |
| Art | Bertram C. Granger | Set Decoration |
| Costume & Make-Up | Mary Kay Dodson | Costume Design |
| Sound | Van Cleave | Orchestrator |
| Sound | Leo Shuken | Orchestrator |
| Sound | George Parrish | Orchestrator |
| Sound | Sidney Cutner | Orchestrator |
| Crew | Pat Lane | Stunts |
| Crew | Russell Saunders | Stunts |
| Sound | Harold Lewis | Sound Recordist |
| Sound | Gene Garvin | Sound Recordist |
| Directing | Francisco Day | Assistant Director |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Visual Effects | Farciot Edouart | Visual Effects |
