Steve London
Jack Rossman
Robert Stack
Eliot Ness
Nicholas Georgiade
Enrico Rossi
Paul Picerni
Lee Hobson
Abel Fernandez
William Youngfellow
Walter Winchell
Narrator
Charlie Picerni
Hood (uncredited)
Frank Wilcox
Beecher Asbury
Anthony George
Cam Allison Jr.
Richard Reeves
Foreman
Charles Sherlock
Police Photographer (uncredited)
Harold J. Stone
Adam Stone
Cyril Delevanti
News Vendor (uncredited)
Frank De Kova
The Man
Eddie Hice
Hood (uncredited)
Dale Van Sickel
Police Officer (uncredited)
Eugene Iglesias
Emilio
Robert Middleton
Mayor Anton J. Cermak
Joe Turkel
Deuces Kobler
Gavin MacLeod
Three-Fingered Jack White
Richard Bakalyan
Prisoner (uncredited)
Joseph Ruskin
Fred Metcalf (uncredited)
Paul Bryar
Racketeer
Chuck Hicks
LaMarr Kane
Hal Taggart
Sully Hindman (uncredited)
Phyllis Coates
Ellie Morley
John Harmon
Ed Johnson (uncredited)
Nehemiah Persoff
Jake 'Greasy Thumb' Guzik
Joseph Mell
Herschel Levitan
John Daheim
Jake Wienhoff (uncredited)
Frank Puglia
Carlo Giovanni
Raymond Bailey
John Carvell
Dabbs Greer
Agent Ned Ferber
Roy Engel
Customer
John Kellogg
Lucky
John McLiam
Rick Landy
Lewis Charles
Joe Giambatista
George Cisar
George Sherburn
Robert J. Wilke
George 'Bugs' Moran
Russ Conway
Warden Hubbard