A federal agent infiltrates a crime syndicate.
| Writing | Robert L. Richards | Screenplay |
| Production | Aaron Rosenberg | Producer |
| Camera | Maury Gertsman | Director of Photography |
| Editing | Ted J. Kent | Editor |
| Directing | William Castle | Director |
| Writing | Henry Jordan | Story |
| Art | Bernard Herzbrun | Art Direction |
| Art | Emrich Nicholson | Art Direction |
| Art | John P. Austin | Set Decoration |
| Art | Russell A. Gausman | Set Decoration |
| Costume & Make-Up | Orry-Kelly | Costume Design |
| Costume & Make-Up | Joan St. Oegger | Hairstylist |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Sound | Leslie I. Carey | Sound |
| Sound | Richard DeWeese | Sound |
| Visual Effects | David S. Horsley | Visual Effects |
| Directing | Connie Earl | Script Supervisor |
| Sound | Frederick Herbert | Music |
| Sound | Miklós Rózsa | Music |
| Sound | Hans J. Salter | Music |
| Sound | Arnold Schwarzwald | Music |
| Sound | Milton Schwarzwald | Music Director |
| Sound | Frank Skinner | Music |
| Sound | Leith Stevens | Music |
| Camera | Glenn Adams | Still Photographer |
| Camera | Harry Davis | Camera Operator |
| Crew | David S. Horsley | Special Effects |
| Directing | Marshall Green | Assistant Director |
| Directing | Jesse Hibbs | Assistant Director |
| Directing | Gordon McLean | Assistant Director |
| Production | Dewey Starkey | Production Manager |
| Sound | Milton Schwarzwald | Original Music Composer |
