James P. Curtayne
Spencer Tracy
Det. Vincent Ricks
Pat O'Brien
Virginia `'Ginny'` Curtayne
Diana Lynn
District Attorney Louis Barra
John Hodiak
Sol `'Knuckles'` Lanzetta
Eduardo Ciannelli
Johnny O'Hara
James Arness
Mrs. Lanzetta
Yvette Dugay
Mrs. Katrina Lanzetta
Yvette Duguay
Sven Norson
Jay C. Flippen
Frank Korvac
William Campbell
Jeff Chapman
Richard Anderson
Mr. O'Hara
Arthur Shields
Judge Keating
Henry O'Neill
Mrs. Peg O'Hara
Louise Lorimer
Betty Clark
Ann Doran
Capt. Tom Mulvaney
Emile G. Meyer
Captain Tom Mulvaney
Emile Meyer
Fred Colton
Regis Toomey
Mrs. William Sheffield
Katherine Warren
Det. Howie Pendleton
Paul Bryar
Waiter (uncredited)
John Albright
James Korvac
Peter Mamakos
Little Wolfie (uncredited)
Tony Barr
Gloria Adler
Perdita Chandler
Tony Korvac (uncredited)
Richard Bartlett
Al
Frank Ferguson
Gambler (uncredited)
Brooks Benedict
Monty
Donald Dillaway
Harry (uncredited)
Leonard Bremen
Angelo Korvac (uncredited)
Charles Bronson
George
Charles Anthony Hughes
Receptionist (uncredited)
Mae Clarke
Emmett Kimbaugh
Lee Phelps
Vincent Korvac
Lawrence Tolan
Court Clerk
Jack Lee
Girl
Jan Kayne
Girl
Virginia Hewitt
Sailor
Richard Landry
William Sheffield
'Billy' Vincent
Bartender
Frank Hyers
Charlie Detective
Michael Dugan
Harry
Lennie Bremen
Off. Abrams
Jim Toney
Sammy
Benny Burt
Thayer Connolly
John Maxwell
Male Stenographer
Paul McGuire
Secretary
Kay Scott
Watchman
Angi O. Poulos
Toby Baum
Julius Tannen
Assistant District Attorney
Dan Foster
Photographer
Harry Cody
Magistrate
Ned Glass
Court Clerk
John Butler
Eddie
Lou Lubin
Workman
Michael Mark
Mary
Phyllis Graffeo
Papa Lanzetta
Maurice Samuels
Mrs. Korvac
Celia Lovsky
Thelma
Joyce Otis
Leigh Keighly
'Tiny' Jimmie Kelly
Augie
Fred Essler
Postal Clerk
John Sheehan
Detective
Jack Kruschen
Technician
William Self
Policeman
Jonathan Cott
Intern
William Schallert
Gambler
Sam Finn
Fishmonger
Frank Sully
Fishmonger
Ernesto Morelli
Ambulance Driver
Jeff Richards
Court Attendant
George Magrill
Fingerprint Technician
Bud Wolfe
Strother Martin
Pete Korvac
Bill Fletcher
Vincent Ricks
Pat O'Brien
William Sheffield
Billy Vincent