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Charles Bronson as George R. 'Machine Gun' Kelly |
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Susan Cabot as Florence 'Flo' Becker |
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Morey Amsterdam as Michael Fandango |
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Richard Devon as Apple |
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Jack Lambert as Howard |
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Frank De Kova as Harry |
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Connie Gilchrist as 'Ma' Becker |
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Wally Campo as Maize |
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Barboura Morris as Lynn Grayson |
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Lori Martin as Sherryl Vito |
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George Archambeault as Frank |
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Robert Griffin as Mr. Andrew Vito |
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Mitzi McCall as Harriet (uncredited) |
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Larry Thor as Detective Drummond |
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Shirley Falls as Martha |
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Jay Sayer as Philip Ashton (uncredited) |
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Ted Thorpe as Freddy (uncredited) |
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Dwight Brooks as Corrupt Cop (uncredited) |
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Michael Fox as Detective Clinton |
| Directing | Roger Corman | Director |
| Sound | Gerald Fried | Original Music Composer |
| Writing | R. Wright Campbell | Screenplay |
| Production | James H. Nicholson | Executive Producer |
| Production | Samuel Z. Arkoff | Executive Producer |
| Editing | Ronald Sinclair | Editor |
| Production | Roger Corman | Producer |
| Art | Harry Reif | Set Decoration |
| Art | Daniel Haller | Art Direction |
| Costume & Make-Up | David Newell | Makeup Artist |
| Camera | Floyd Crosby | Director of Photography |
