In the Windy City, the mob infiltrates a powerful union.
| Directing | Sidney Salkow | Director |
| Writing | Bernard Gordon | Screenplay |
| Production | Robert E. Kent | Producer |
| Sound | Emil Newman | Original Music Composer |
| Camera | Kenneth Peach | Director of Photography |
| Editing | Grant Whytock | Editor |
| Writing | Jack Lait | Book |
| Writing | Lee Mortimer | Book |
| Art | Albert S. D'Agostino | Art Direction |
| Art | Herman N. Schoenbrun | Set Decoration |
| Costume & Make-Up | Lee Greenway | Makeup Artist |
