Edmond O'Brien

as Det. Lt. Barney Nolan

Marla English

as Patty Winters

John Agar

as Det. Sgt. Mark Brewster

Emile Meyer

as Capt. Gunnarson

Carolyn Jones

as Beth, Girl at Bar

Claude Akins

as Fat Michaels

Herbert Butterfield

as Cabot, Reporter

Hugh Sanders

as Packy Reed

William Schallert

as Asst. Dist. Atty. Andy Tucker

Richard Deacon

as The Professor

John Beradino

as Gambler Being Booked

Robert Bray

as Detective

Stafford Repp

as Detective O'Dell

Vito Scotti

as Joe the Bartender

William Boyett

Robert Bray

Richard H. Cutting

Lawrence Ryle

as Laddie O'Neil

Mickey Golden

David Hughes

Frank Marlowe

Gregg Martell

Tom McKee

Grazia Narciso

Norman Ollestad

Jack Perry

John Phillips

Joe Ploski