Devil's Island

Dr. Charles Gaudet

Boris Karloff

Madame Lucien

Nedda Harrigan

Col. Armand Lucien

James Stephenson

Pierre

Adia Kuznetzoff

Collette

Rolla Gourvitch

Bobo

Will Stanton

Dr. Duval

Edward Keane

Demonpre

Robert Warwick

Marcal

Pedro de Cordoba

Emil

Tom Wilson

Andre

John Harmon

Georges

Richard Bond

Leon

Earl Gunn

Soupy

Sidney Bracey

Dogface

George Lloyd

Governor Beaufort

Charles Richman

Gustav LeBrun

Stuart Holmes

Advocate General

Leonard Mudie

Debriac

Egon Brecher

President of Assize Court

Frank Reicher

Guard

James Blaine

Pilot of Escape Boat

Dick Botiller

Captain of the Guards

Al Bridge

Court Clerk

Nat Carr

Gendarme on Train

Glen Cavender

Captain of Gendarmes

Davison Clark

Jules

Neal Clisby

Guard Accepting Bribe

Harry Cording

Man Escaping Gendarmes with Debriac

Gino Corrado

Priest

Earl Dwire

Supply Clerk

Eddie Foster

Guard

Galan Galt

Guard Escorting Gaudet After Operation

Sol Gorss

Guard

Frank Hagney

Captain of Second Convict Ship

John Hamilton

François - Sergeant of the Guards

Ben Hendricks Jr.

Guard

Stanley King

Gaudet's Housekeeper

Vera Lewis

Governor's Servant

Billy McClain

Guard Handcuffing Pierre

Henry Otho

Jury Foreman

Paul Panzer

Capt. Edvard Fearreau of the First Convict Ship

Alonzo Price

Guard Drugged by Gaudet

Dick Rich

Uniformed Gendarme

Cliff Saum

Boatman Taking Madame Lucien to Mainland

Francis Sayles

Daniel - Madame Lucien's Servant

Earl Smith

Wagon Driver

Walter Soderling

Gate Guard

Elliott Sullivan

Guard Escorting Gaudet After Operation

Don Turner

Guard

Douglas Williams