L'Énigme du Chicago Express

Charles McGraw

Det. Sgt. Walter Brown

Marie Windsor

Mrs. Frankie Neall

Jacqueline White

Ann Sinclair

Gordon Gebert

Tommy Sinclair

Queenie Leonard

Mrs. Troll

David Clarke

Joseph Kemp

Peter Virgo

Densel

Don Beddoe

Det. Sgt. Gus Forbes

Paul Maxey

Sam Jennings

Harry Harvey

Train Conductor

Peter Brocco

Vincent Yost (uncredited)

George Chandler

Accomplice Running Newsstand (uncredited)