Boris Karloff

Character: Dr. Charles Gaudet

Nedda Harrigan

Character: Madame Lucien

James Stephenson

Character: Col. Armand Lucien

Adia Kuznetzoff

Character: Pierre

Rolla Gourvitch

Character: Collette

Will Stanton

Character: Bobo

Edward Keane

Character: Dr. Duval

Robert Warwick

Character: Demonpre

Pedro de Cordoba

Character: Marcal

Tom Wilson

Character: Emil

John Harmon

Character: Andre

Richard Bond

Character: Georges

Earl Gunn

Character: Leon

Sidney Bracey

Character: Soupy

George Lloyd

Character: Dogface

Charles Richman

Character: Governor Beaufort

Stuart Holmes

Character: Gustav LeBrun

Leonard Mudie

Character: Advocate General

Egon Brecher

Character: Debriac

Frank Reicher

Character: President of Assize Court

James Blaine

Character: Guard

Dick Botiller

Character: Pilot of Escape Boat

Al Bridge

Character: Captain of the Guards

Nat Carr

Character: Court Clerk

Glen Cavender

Character: Gendarme on Train

Davison Clark

Character: Captain of Gendarmes

Neal Clisby

Character: Jules

Harry Cording

Character: Guard Accepting Bribe

Gino Corrado

Character: Man Escaping Gendarmes with Debriac

Earl Dwire

Character: Priest

Eddie Foster

Character: Supply Clerk

Galan Galt

Character: Guard

Sol Gorss

Character: Guard Escorting Gaudet After Operation

Frank Hagney

Character: Guard

John Hamilton

Character: Captain of Second Convict Ship

Ben Hendricks Jr.

Character: François - Sergeant of the Guards

Stanley King

Character: Guard

Vera Lewis

Character: Gaudet's Housekeeper

Billy McClain

Character: Governor's Servant

Henry Otho

Character: Guard Handcuffing Pierre

Paul Panzer

Character: Jury Foreman

Alonzo Price

Character: Capt. Edvard Fearreau of the First Convict Ship

Dick Rich

Character: Guard Drugged by Gaudet

Cliff Saum

Character: Uniformed Gendarme

Francis Sayles

Character: Boatman Taking Madame Lucien to Mainland

Earl Smith

Character: Daniel - Madame Lucien's Servant

Walter Soderling

Character: Wagon Driver

Elliott Sullivan

Character: Gate Guard

Don Turner

Character: Guard Escorting Gaudet After Operation

Douglas Williams

Character: Guard