Bruce Bennett

Character: Patrick Norris

Florence Rice

Character: Lola Hobbs

Barton MacLane

Character: Sam O'Donnell

Joe Downing

Character: Lou Boyd

Joseph Crehan

Character: Police Chief Hobbs

Howard Hickman

Character: Dr. Talbot

Edward Van Sloan

Character: Prof. Holtz

P.J. Kelly

Character: Prof. Cordet

Don Beddoe

Character: Maj. Blaine

William Forrest

Character: Mr. Brooks

Dantón Ferrero

Character: Mr. DeSoto

George Anderson

Character: Detective Bennett

Duke York

Character: Joe Carpa

Eddie Laughton

Character: Henchman Bishop

George Magrill

Character: Henchman Scarlatti

Cy Schindell

Character: Henchman Felton

Sam Ash

Character: Walter A. Adams, gang accountant

John Dilson

Character: Walter W. Carter

George McKay

Character: Bill "Goldy" Golden

Jessie Perry

Character: Mom Norris