Cedric Hardwicke

Richard Cobb

Vincent Price

Geoffrey Radcliffe

Nan Grey

Helen Manson

John Sutton

Dr. Frank Griffin

Cecil Kellaway

Inspector Sampson

Alan Napier

Willie Spears

Forrester Harvey

Ben Jenkins

Ernie Adams

Minor Role (uncredited)

Jimmy Aubrey

Plainclothesman (uncredited)

Walter Bacon

Fight Spectator (uncredited)

Billy Bevan

Jim (uncredited)

Clara Blore

Woman (uncredited)

Stanley Blystone

Minor Role (uncredited)

Matthew Boulton

Policeman (uncredited)

Ed Brady

Policeman (uncredited)

Chet Brandenburg

Miner at Colliery (uncredited)

Louise Brien

Griffin's Secretary (uncredited)

Charles Brokaw

Minor Role (uncredited)

Jean Brooks

Minor Role (uncredited)

Tom Coleman

Miner at Colliery (uncredited)

Frank Coletti

Minor Role (uncredited)

Harry Cording

Miner (uncredited)

Paul England

Detective (uncredited)

Rex Evans

Constable Briggs (uncredited)

Mary Field

Passerby at Willie's House (uncredited)

Edward Fielding

Prison Governor (uncredited)

Raoul Freeman

Detective (uncredited)

Mary Gordon

Cookie (uncredited)

Sidney Grayler

Minor Role (uncredited)

Kit Guard

Miner at Colliery (uncredited)

Frank Hagney

Bill (uncredited)

Bobby Hale

Miner at Colliery (uncredited)

Barry Hays

Minor Role (uncredited)

Frank Hill

Policeman (uncredited)

Leyland Hodgson

Chauffeur (uncredited)

Hugh Huntley

Secretary (uncredited)

George Hyde

Miner at Radcliffe Colliery (uncredited)

Ellis Irving

Miner at Radcliffe Colliery (uncredited)

Boyd Irwin

Minor Role (uncredited)

Dick Johnstone

Miner at Colliery (uncredited)

Colin Kenny

Plainclothesman (uncredited)

George Kirby

Miner at Radcliffe Colliery (uncredited)

Bruce Lester

Chaplain (uncredited)

George Lloyd

Miner at Radcliffe Colliery (uncredited)

Jack Low

Miner at Colliery (uncredited)

Edmund MacDonald

Miner at Radcliffe Colliery (uncredited)

William Newell

Minor Role (uncredited)

Frank O'Connor

Constable at Coal Train (uncredited)

Alexander Pollard

Footman (uncredited)

Frances Robinson

Clinic Nurse (uncredited)

Robert Robinson

Miner at Colliery (uncredited)

Ivan F. Simpson

Mr. Cotton (uncredited)

Harry Stubbs

Constable Tewsbury (uncredited)

Denis Tankard

Miner at Radcliffe Colliery (uncredited)

Cyril Thornton

Policeman (uncredited)

David Thursby

Bob (uncredited)

Crane Whitley

Minor Role (uncredited)

Eric Wilton

Fingerprint Expert (uncredited)

Jack Otterson

Art Direction

Milton Krasner

Director of Photography

Vera West

Costume Design

Joe May

Director

Frank Skinner

Original Music Composer

Curt Siodmak

Screenplay

Lester Cole

Screenplay

Hans J. Salter

Original Music Composer

Russell A. Gausman

Set Decoration

Curt Siodmak

Story

Joe May

Story

John P. Fulton

Visual Effects

H. G. Wells

Characters

Frank Gross

Editor

William Hedgcock

Sound Engineer

Ken Goldsmith

Associate Producer

Cleo E. Baker

Visual Effects

Phil Karlson

Assistant Director

Cedric Belfrage

Additional Writing

Martin Obzina

Art Direction

Bernard B. Brown

Sound Supervisor

David S. Horsley

Special Effects

Charles Previn

Music Director