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