ADA Martin Ferguson

Humphrey Bogart

Big Babe Lazick

Zero Mostel

Joseph 'Joe' Rico

Ted de Corsia

Albert Mendoza

Everett Sloane

Captain Frank Nelson

Roy Roberts

James 'Duke' Malloy

Michael Tolan

James (Duke) Malloy

Lawrence Tolan

Sgt. Whitlow

King Donovan

Herman

Bob Steele

Olga Kirshen

Adelaide Klein

Thomas O'Hara

Don Beddoe

Tony Vetto

Tito Vuolo

Vince

John Kellogg

'Philadelphia' Tom Zaca

Jack Lambert

Teresa Davis/Angela Vetto

Patricia Joiner

B. J. (uncredited)

Harry Wilson

Mayor (uncredited)

Dan Riss

Nina Lombardo (uncredited)

Susan Cabot

Fire Chief (uncredited)

Howard M. Mitchell

Louis

Mario Siletti

Shorty Schultz (uncredited)

Alan Foster

Mrs. Lazich (uncredited)

Greta Granstedt

Digger (uncredited)

Danny Dayton

Intern

Pete Kellett

Intern

Barry Reagan

'Sad Eyes' (uncredited)

Edwin Max

Keeper

Art Dupuis

Fireman

Bud Wolfe

Clerk

Richard Bartell

Clerk

Creighton Hale

Chet Brandenburg

Teenager

Patricia Hayes

Helen Brown

Benny Burt

Secretary

Robert Strong

Steve Carruthers

Detective

Mike Lally

Medical Examiner

George Meader

Sayre Dearing

Sergeant

Ralph Dunn

Tom Dillon

Police Sergeant

Perc Launders

Charles Ferguson

Doctor

John Maxwell

Police Chauffeur

Brick Sullivan

Tim Graham

Eula Guy

Boy

Louis Lettieri

Intern

Montgomery Pittman

Chuck Hamilton

Policeman

Jay Morley

Fred Kelsey

Nina as a Child

Karen Kester

Philo McCullough

David McMahon

Jack Mower

Paul Panzer

Barry Regan

Chalky Williams

Tom Wilson