Uncle Frank Kelly calls on Harry Crown to help him in a gang war. The war becomes personal when Harry's new girlfriend is kidnapped by Uncle Frank's enemy, Big Eddie.
| Writing | Robert Dillon | Writer |
| Directing | John Frankenheimer | Director |
| Editing | Harold F. Kress | Editor |
| Costume & Make-Up | Ron Talsky | Costume Design |
| Production | Joe Wizan | Producer |
| Camera | Ralph Woolsey | Director of Photography |
| Production | Jack Baur | Casting |
| Art | Herman A. Blumenthal | Art Direction |
| Art | Jerry Wunderlich | Set Decoration |
| Costume & Make-Up | Jean Austin | Hairstylist |
| Production | Donald C. Klune | Production Manager |
| Sound | Henry Mancini | Original Music Composer |
| Costume & Make-Up | Ken Chase | Makeup Artist |
| Production | Mel Dellar | Unit Production Manager |
| Production | Mickey Borofsky | Associate Producer |
| Sound | Blake Wilcox | Boom Operator |
| Crew | Jerry Brutsche | Stunts |
| Crew | Ira Anderson Jr. | Special Effects |
| Camera | Robert O. Moore | Dolly Grip |
| Sound | Don Hall | Sound Editor |
| Crew | Bennie E. Dobbins | Stunts |
| Crew | Jesse Wayne | Stunts |
| Camera | Eric D. Andersen | Camera Technician |
| Crew | A. Paul Pollard | Special Effects |
| Crew | Dick Durock | Stunts |
| Crew | George Robotham | Stunts |
| Art | Alan Levine | Property Master |
| Crew | Erik Cord | Stunts |
| Crew | Walter Scott | Stunts |
| Lighting | George Holmes | Gaffer |
| Crew | Max Kleven | Stunt Coordinator |
| Crew | Preston Peterson | Stunts |
| Crew | Craig R. Baxley | Stunts |
| Crew | Gene LeBell | Stunts |
| Camera | Bill Fleming | Dolly Grip |
| Crew | Loren Janes | Stunts |
| Camera | Dick Johnson | Camera Operator |
| Directing | Kurt Neumann | Assistant Director |
| Directing | L. Andrew Stone | Assistant Director |
| Sound | Glenn E. Anderson | Sound Mixer |
| Sound | Theodore Soderberg | Sound Re-Recording Mixer |
| Crew | Larry Duran | Stunts |
| Sound | Edward Rossi | Sound Editor |
| Crew | Paul Stader | Stunts |
| Crew | Larry Holt | Stunts |
| Crew | Harvey Parry | Stunts |
| Production | Jere Henshaw | Executive In Charge Of Production |
| Production | John W. Rogers | Production Manager |
| Crew | Fred Lerner | Stunts |
| Lighting | Larry D. Howard | Best Boy Electric |
| Camera | Hal Shiffman | Camera Technician |
| Directing | Lorin Bennett Salob | Second Assistant Director |
| Crew | Gale Brown | Propmaker |
| Camera | Lance Williams | Camera Operator |
| Crew | Howard Curtis | Stunts |
| Camera | Lamar Boren | Underwater Director of Photography |
| Camera | Chris Schwiebert | Camera Operator |
| Crew | Tony Epper | Stunts |
| Crew | Jack Verbois | Stunts |
| Crew | Nick Dimitri | Stunts |
| Crew | Joe Canutt | Stunts |
| Art | Hendrik Wynands | Construction Coordinator |
| Crew | Fritz Ford | Stunts |
| Crew | Terry Leonard | Stunts |
| Crew | Chuck Roberson | Stunts |
| Crew | George P. Wilbur | Stunts |
| Camera | Daniel R. Jordan | Grip |
| Crew | Jack Williams | Stunts |
| Crew | Bob Herron | Stunts |
| Camera | Orlando Suero | Still Photographer |
| Sound | Godfrey Marks | Dialogue Editor |