In Chicago, an unemployed actor aims to solve the mystery concerning a string of ax murders, apparently committed by a lunatic.
| Production | Irving Starr | Producer |
| Sound | Bronislau Kaper | Original Music Composer |
| Directing | Charles Lederer | Director |
| Writing | Rose Caylor | Screenplay |
| Writing | Lawrence P. Bachmann | Screenplay |
| Writing | Rose Caylor | Story |
| Camera | Charles Lawton Jr. | Director of Photography |
| Camera | Harry Stradling Sr. | Director of Photography |
| Sound | Mario Castelnuovo-Tedesco | Original Music Composer |
| Editing | George Boemler | Editor |
| Art | Cedric Gibbons | Art Direction |
| Sound | Daniele Amfitheatrof | Original Music Composer |
| Art | Edwin B. Willis | Set Decoration |
| Sound | Douglas Shearer | Sound Director |
| Sound | Leonid Raab | Orchestrator |
| Crew | Charles Mandell | Technical Advisor |
| Directing | Bert Spurlin | Assistant Director |
| Art | William Ferrari | Art Direction |
| Costume & Make-Up | Howard Shoup | Costume Design |
