James 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. 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

Tony Korvac (uncredited)

Richard Bartlett

Gloria Adler

Perdita Chandler

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 (as Lawrence Tolan) (uncredited)

Michael Tolan

Court Clerk

Jack Lee

William Sheffield (uncredited)

Sailor Vincent

Girl

Jan Kayne

Preliminary Hearing Judge (uncredited)

Ned Glass

Girl

Virginia Hewitt

Pete Korvac (uncredited)

Bill Fletcher

Sailor

Richard Landry

Uniformed Detective (uncredited)

Jack Kruschen

William Sheffield

'Billy' Vincent

Intern with Ambulance (uncredited)

William Schallert

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

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

Technician

William Self

Policeman

Jonathan Cott

Gambler

Sam Finn

Fishmonger

Frank Sully

Fishmonger

Ernesto Morelli

Ambulance Driver

Jeff Richards

Court Attendant

George Magrill

Fingerprint Technician

Bud Wolfe

Strother Martin