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

George Waggner

Screenplay

Harry Essex

Story

Sid Schwartz

Story

Len Golos

Story

Harold H. MacArthur

Art Direction

Bernard B. Brown

Sound Supervisor

David Sharpe

Stunts

Hans J. Salter

Music Director

Charles Henderson

Music

Charles Previn

Orchestrator

Frank Skinner

Music

Eric Wybrow

Technical Supervisor

Jack Bernhard

Associate Producer

Hans J. Salter

Original Music Composer

Elwood Bredell

Director of Photography

Arthur Hilton

Editor

Jack Otterson

Art Direction

Russell A. Gausman

Set Decoration

Vera West

Costume Design

Jack Pierce

Makeup Artist

John P. Fulton

Special Effects

Charles Carroll

Sound