After his mistress is murdered, a Mafia leader goes after the killer with a bloody vengeance. Soon after the hunt begins, a gang war ensues.
| Writing | Christopher Trumbo | Adaptation |
| Writing | Michael Butler | Adaptation |
| Writing | Marvin H. Albert | Novel |
| Writing | Marvin H. Albert | Screenplay |
| Directing | Richard Fleischer | Director |
| Art | E. Preston Ames | Art Direction |
| Production | Hal B. Wallis | Producer |
| Production | Paul Nathan | Associate Producer |
| Sound | Jerry Goldsmith | Original Music Composer |
| Editing | Edward A. Biery | Editor |
| Costume & Make-Up | Edith Head | Costume Design |
| Camera | Richard H. Kline | Director of Photography |
| Art | Donald J. Sullivan | Set Decoration |
| Art | Ed Shanley | Construction Coordinator |
| Crew | Dick Ziker | Stunts |
| Crew | Jeannie Epper | Stunts |
| Crew | Loren Janes | Stunts |
| Crew | Charlie Picerni | Stunts |
| Crew | Walter Scott | Stunts |
| Crew | Bob Herron | Stunts |
