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Sean McClory as Gunner O'Hara / John O'Hara |
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Joanne Jordan as Joan Marlowe |
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Ray Middleton as Police Chief Corbett |
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Jaclynne Greene as Gilda |
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Lee Van Cleef as Flash Logan |
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James Griffith as Smiley Di Angelo |
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Hugh Sanders as Tim Donovan |
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Roy Roberts as District Attorney |
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Peter Mamakos as Charlie Green |
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Robert Crosson as Danny Marlowe |
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Frank Gerstle as Dum-Dum Wilson |
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Willis Bouchey as Warden Lewis J. Johnson |
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Philip Van Zandt as Jake Freeman |
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Don Haggerty as Prison Guard (uncredited) |
| Sound | R. Dale Butts | Original Music Composer |
| Camera | Reggie Lanning | Director of Photography |
| Art | Walter E. Keller | Art Direction |
| Art | Edward G. Boyle | Set Decoration |
| Art | John McCarthy Jr. | Set Decoration |
| Costume & Make-Up | Adele Palmer | Costume Design |
| Directing | Roy Wade | Assistant Director |
| Directing | William F. Sheehan | Assistant Director |
| Sound | Joe Edmondson | Sound |
| Directing | R.G. Springsteen | Director |
| Writing | John K. Butler | Writer |
| Editing | Tony Martinelli | Editor |
| Directing | Geraldine Wright | Script Supervisor |
