Lon Chaney Jr.

Dan McCormick

Lionel Atwill

Dr. Paul Rigas

Anne Nagel

June Lawrence

Frank Albertson

Mark Adams

Samuel S. Hinds

Dr. John Lawrence

William B. Davidson

District Attorney Ralph B. Stanley

Ben Taggart

Detective Sergeant Regan

Constance Bergen

Nurse

Ivan Miller

Doctor

Chester Gan

Chinese Boy, Wong

George Meader

Dr. Bruno

Frank O'Connor

Detective

John Dilson

Medical Examiner

Byron Foulger

Alienist #2

Jessie Arnold

Mrs. Frank Davis (uncredited)

James Blaine

Charlie, Prison Guard (uncredited)

Gary Breckner

Radio Announcer (uncredited)

Lowell Drew

Jury Foreman (uncredited)

John Ellis

Assistant District Attorney (uncredited)

Douglas Evans

Police Radio Announcer (uncredited)

Jack Gardner

Reporter (uncredited)

William Hall

Mike - Dynamo Operator (uncredited)

Russell Hicks

Warden Harris (uncredited)

Wright Kramer

Judge (uncredited)

Tom Quinn

Detective (uncredited)

Bob Reeves

Prison Guard (uncredited)

Mel Ruick

Defense Attorney (uncredited)

Francis Sayles

Frank Davis (uncredited)

Paul Scott

Prison Chaplain (uncredited)

David Sharpe

Hay Wagon Passenger (uncredited)

Victor Zimmerman

Dynamo Operator #2 (uncredited)

Corky

Corky the Dog (uncredited)

George Waggner

Director

Harry Essex

Guión, Historia

Sid Schwartz

Guión, Historia

Len Golos

Guión, Historia

George Waggner

Guión, Guión Adaptado

Elwood Bredell

Director de Fotografía

Hans J. Salter

Compositor de la Música Original, Music Director

Charles Henderson

Música

Frank Skinner

Música

Charles Previn

Orquestador

Charles Carroll

Sound

Bernard B. Brown

Sound Supervisor

Universal Pictures

Compañía de Produccion

Jack Bernhard

Productor Asociado

Jack Pierce

Maquilladora

Vera West

Diseño de Vestuario

Arthur Hilton

Editor

Jack Otterson

Dirección Artística

Harold H. MacArthur

Dirección Artística

Russell A. Gausman

Decorados

John P. Fulton

Special Effects

David Sharpe

Dobles

Eric Wybrow

Technical Supervisor