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