After straight-arrow district attorney Joseph Foster says in frustration that he would sell his soul to bring down a local mob boss, a smooth-talking stranger named Nick Beal shows up with enough evidence to seal a conviction. When that success leads Foster to run for governor, Beal's unearthly hold on him turns the previously honest man corrupt, much to the displeasure of his wife and his steadfast minister.
| Directing | John Farrow | Director |
| Writing | Jonathan Latimer | Screenplay |
| Writing | Mindret Lord | Story |
| Production | Endre Bohem | Producer |
| Sound | Franz Waxman | Original Music Composer |
| Editing | Eda Warren | Editor |
| Camera | Lionel Lindon | Director of Photography |
| Directing | Charles Morton | Script Supervisor |
| Sound | Van Cleave | Orchestrator |
| Sound | Leonid Raab | Orchestrator |
| Sound | George Parrish | Orchestrator |
| Sound | Sidney Cutner | Orchestrator |
| Editing | Eda Warren | Supervising Editor |
| Lighting | Stanley Williams | Gaffer |
| Camera | Charles Sickler | Grip |
| Camera | William Rand | Camera Operator |
| Camera | Ed Henderson | Still Photographer |
| Sound | Philip Wisdom | Sound |
| Sound | Gene Garvin | Sound |
| Directing | Francisco Day | Assistant Director |
| Production | John L. Murphy | Production Manager |
| Production | Stanley Goldsmith | Production Manager |
| Costume & Make-Up | Merle Reeves | Hairstylist |
| Costume & Make-Up | Gale McGarry | Hairstylist |
| Costume & Make-Up | Ted Larsen | Makeup Artist |
| Costume & Make-Up | Delven Armstrong | Makeup Artist |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Costume & Make-Up | Mary Kay Dodson | Costume Designer |
| Art | Ross Dowd | Set Decoration |
| Art | Sam Comer | Set Decoration |
| Art | Hans Dreier | Art Direction |
| Art | Franz Bachelin | Art Direction |
