Humphrey Bogart

Dist. Atty. Martin Ferguson

Zero Mostel

Big Babe Lazick

Ted de Corsia

Joseph Rico

Everett Sloane

Albert Mendoza

Roy Roberts

Capt. Frank Nelson

Michael Tolan

James (Duke) Malloy

King Donovan

Sgt. Whitlow

Bob Steele

Herman

Adelaide Klein

Olga Kirshen

Don Beddoe

Thomas O'Hara

Tito Vuolo

Tony Vetto

John Kellogg

Vince

Jack Lambert

Philadelphia Tom Zaca

Richard Bartell

Police Records Clerk

Chet Brandenburg

Ambulance Attendant

Helen Brown

Landlady

Benny Burt

Undetermined Secondary Role

Susan Cabot

Nina Lombardo