Richard Cobb

Cedric Hardwicke

Geoffrey Radcliffe

Vincent Price

Jim (uncredited)

Billy Bevan

Woman (uncredited)

Clara Blore

Minor Role (uncredited)

Stanley Blystone

Policeman (uncredited)

Matthew Boulton

Policeman (uncredited)

Ed Brady

Miner at Colliery (uncredited)

Chet Brandenburg

Griffin's Secretary (uncredited)

Louise Brien

Minor Role (uncredited)

Charles Brokaw

Minor Role (uncredited)

Jean Brooks

Miner at Colliery (uncredited)

Tom Coleman

Helen Manson

Nan Grey

Minor Role (uncredited)

Frank Coletti

Miner (uncredited)

Harry Cording

Detective (uncredited)

Paul England

Constable Briggs (uncredited)

Rex Evans

Passerby at Willie's House (uncredited)

Mary Field

Prison Governor (uncredited)

Edward Fielding

Detective (uncredited)

Raoul Freeman

Cookie (uncredited)

Mary Gordon

Minor Role (uncredited)

Sidney Grayler

Miner at Colliery (uncredited)

Kit Guard

Dr. Frank Griffin

John Sutton

Bill (uncredited)

Frank Hagney

Miner at Colliery (uncredited)

Bobby Hale

Minor Role (uncredited)

Barry Hays

Policeman (uncredited)

Frank Hill

Chauffeur (uncredited)

Leyland Hodgson

Secretary (uncredited)

Hugh Huntley

Miner at Radcliffe Colliery (uncredited)

George Hyde

Miner at Radcliffe Colliery (uncredited)

Ellis Irving

Minor Role (uncredited)

Boyd Irwin

Miner at Colliery (uncredited)

Dick Johnstone

Inspector Sampson

Cecil Kellaway

Plainclothesman (uncredited)

Colin Kenny

Miner at Radcliffe Colliery (uncredited)

George Kirby

Chaplain (uncredited)

Bruce Lester

Miner at Radcliffe Colliery (uncredited)

George Lloyd

Miner at Colliery (uncredited)

Jack Low

Miner at Radcliffe Colliery (uncredited)

Edmund MacDonald

Minor Role (uncredited)

William Newell

Constable at Coal Train (uncredited)

Frank O'Connor

Footman (uncredited)

Alexander Pollard

Clinic Nurse (uncredited)

Frances Robinson

Willie Spears

Alan Napier

Miner at Colliery (uncredited)

Robert Robinson

Mr. Cotton (uncredited)

Ivan F. Simpson

Constable Tewsbury (uncredited)

Harry Stubbs

Miner at Radcliffe Colliery (uncredited)

Denis Tankard

Policeman (uncredited)

Cyril Thornton

Bob (uncredited)

David Thursby

Minor Role (uncredited)

Crane Whitley

Fingerprint Expert (uncredited)

Eric Wilton

Ben Jenkins

Forrester Harvey

Minor Role (uncredited)

Ernie Adams

Plainclothesman (uncredited)

Jimmy Aubrey

Fight Spectator (uncredited)

Walter Bacon

Original Music Composer

Frank Skinner

Director

Joe May

Story

Joe May

Director of Photography

Milton Krasner

Characters

H.G. Wells

Assistant Director

Phil Karlson

Screenplay

Curt Siodmak

Screenplay

Lester Cole

Art Direction

Jack Otterson

Costume Design

Vera West

Original Music Composer

Hans J. Salter

Set Decoration

Russell A. Gausman

Story

Curt Siodmak

Editor

Frank Gross

Visual Effects

John P. Fulton

Additional Writing

Cedric Belfrage

Associate Producer

Ken Goldsmith

Art Direction

Martin Obzina

Sound Supervisor

Bernard B. Brown

Sound Engineer

William Hedgcock

Visual Effects

Cleo E. Baker

Special Effects

David S. Horsley

Music Director

Charles Previn