Humphrey Bogart as ADA Martin Ferguson

Zero Mostel as 'Big Babe' Lazich

Ted de Corsia as Joseph 'Joe' Rico

Everett Sloane as Albert Mendoza

Roy Roberts as Captain Frank Nelson

Michael Tolan as James 'Duke' Malloy

King Donovan as Sergeant Whitlow

Bob Steele as Herman

Adelaide Klein as Olga Kirshen

Don Beddoe as Thomas O'Hara

Tito Vuolo as Tony Vetto

John Kellogg as Vince

Jack Lambert as 'Philadelphia' Tom Zaca

Harry Wilson as B. J. (uncredited)

Dan Riss as Mayor (uncredited)

Howard M. Mitchell as Fire Chief (uncredited)

Greta Granstedt as Mrs. Lazich (uncredited)

Danny Dayton as Digger (uncredited)

Susan Cabot as Nina Lombardo (uncredited)

Patricia Joiner as Teresa Davis (uncredited)

Mario Siletti as Louis the Barber (uncredited)

Edwin Max as 'Sad Eyes' (uncredited)

Richard Bartell as

Chet Brandenburg as

Helen Brown as

Benny Burt as

Steve Carruthers as

Sayre Dearing as

Tom Dillon as

Ralph Dunn as

Art Dupuis as

Charles Ferguson as

Alan Foster as

Tim Graham as

Eula Guy as

Creighton Hale as

Chuck Hamilton as

Patricia Hayes as

Pete Kellett as

Fred Kelsey as

Karen Kester as

Mike Lally as

Perc Launders as

Louis Lettieri as

John Maxwell as

Philo McCullough as

David McMahon as

George Meader as

Jay Morley as

Jack Mower as

Paul Panzer as

Montgomery Pittman as

Barry Regan as

Robert Strong as

Brick Sullivan as

Chalky Williams as

Tom Wilson as

Bud Wolfe as