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
Levinsky
Charles Sherlock
Police Photographer (uncredited)
Harold J. Stone
Louie Madikoff
Cyril Delevanti
News Vendor (uncredited)
Frank De Kova
Louis 'Little New York' Campagna
Eddie Hice
Hood (uncredited)
Richard Bakalyan
Lucky
Joseph Ruskin
Alexander Stavro
Dale Van Sickel
Running Racetrack Cop (uncredited)
Eugene Iglesias
Tony Cestari
Robert Middleton
Mayor Anton J. Cermak
Joe Turkel
Gobo Karsh
Gavin MacLeod
Three-Fingered Jack White
Joseph Mell
Hap Levinson (uncredited)
Paul Bryar
Police Capt. Reardon (uncredited)
Chuck Hicks
LaMarr Kane
Hal Taggart
Sully Hindman (uncredited)
Phyllis Coates
Ellie Morley
John Harmon
Ed Johnson (uncredited)
Nehemiah Persoff
Jake 'Greasy Thumb' Guzik
John Daheim
Rocky Pearson
Frank Puglia
Carlo Feruzzi
Claude Akins
Vince Majesky
Raymond Bailey
John Carvell
Lee Marvin
Mike Brannon
Marc Lawrence
Mike Genna
Dabbs Greer
Thomas B. Randall
Roy Engel
Whelan
Ed Asner
Jimmy Canada
John Kellogg
Striber
John McLiam
Driver