Richard Dix

John Sinclair / John Carter

Lynn Merrick

Joan Martin Sinclair

Rhys Williams

Ernie Sparrow

Dorothy Vernon

James Cardwell

Fred (Doc) Graham

Tom Kennedy

Ferdinand / Hammerlock

Sam Ash

Gibson Motor Car Co. Executive (uncredited)

Egon Brecher

Dr. Rose (replaced by Frank Reicher) (uncredited)

Charles Coleman

Sinclair's Butler (uncredited)

Otto Forrest

The Whistler (uncredited)

Byron Foulger

Georgie (uncredited)

Martín Garralaga

Tony, Fruit Peddler (uncredited)

John Hamilton

Doctor (uncredited)

Stuart Holmes

Sinclair Executive (uncredited)

Wilbur Mack

Sinclair Executive (uncredited)

Charles Marsh

Sinclair Executive (uncredited)

Harold Miller

Sinclair Executive (uncredited)

Forbes Murray

Sinclair Executive (uncredited)

Gigi Perreau

Bobbie (uncredited)

Frank Reicher

Dr. Rose (uncredited)

Clinton Rosemond

Train Porter (uncredited)

Frank J. Scannell

Druggist (uncredited)

Minerva Urecal

Georgie's Wife (uncredited)

Robert B. Williams

Pharmacist (uncredited)

Douglas Wood

Paul Kitridge - Attorney (uncredited)

William Castle

Director

Chris Beute

Asistente de Dirección

Wilfred H. Petitt

Guión

Allan Radar

Guión, Historia

William Castle

Guión

George Meehan

Director de Fotografía

Mario Castelnuovo-Tedesco

Compositor de la Música Original

Jack A. Goodrich

Sound

Rudolph C. Flothow

Productor

Larry Darmour Productions

Compañía de Produccion

Dwight Caldwell

Editor