Boris Karloff

Dr. Charles Gaudet

Nedda Harrigan

Madame Lucien

James Stephenson

Col. Armand Lucien

Adia Kuznetzoff

Pierre

Rolla Gourvitch

Collette

Will Stanton

Bobo

Edward Keane

Dr. Duval

Robert Warwick

Demonpre

Pedro de Cordoba

Marcal

Tom Wilson

Emil

John Harmon

Andre

Richard Bond

Georges

Earl Gunn

Leon

Sidney Bracey

Soupy

George Lloyd

Dogface

Charles Richman

Governor Beaufort

Stuart Holmes

Gustav LeBrun

Leonard Mudie

Advocate General

Egon Brecher

Debriac

Frank Reicher

President of Assize Court

James Blaine

Guard

Dick Botiller

Pilot of Escape Boat

Al Bridge

Captain of the Guards

Nat Carr

Court Clerk

Glen Cavender

Gendarme on Train

Davison Clark

Captain of Gendarmes

Neal Clisby

Jules

Harry Cording

Guard Accepting Bribe

Gino Corrado

Man Escaping Gendarmes with Debriac

Earl Dwire

Priest

Eddie Foster

Supply Clerk

Galan Galt

Guard

Sol Gorss

Guard Escorting Gaudet After Operation

Frank Hagney

Guard

John Hamilton

Captain of Second Convict Ship

Ben Hendricks Jr.

François - Sergeant of the Guards

Stanley King

Guard

Vera Lewis

Gaudet's Housekeeper

Billy McClain

Governor's Servant

Henry Otho

Guard Handcuffing Pierre

Paul Panzer

Jury Foreman

Alonzo Price

Capt. Edvard Fearreau of the First Convict Ship

Dick Rich

Guard Drugged by Gaudet

Cliff Saum

Uniformed Gendarme

Francis Sayles

Boatman Taking Madame Lucien to Mainland

Earl Smith

Daniel - Madame Lucien's Servant

Walter Soderling

Wagon Driver

Elliott Sullivan

Gate Guard

Don Turner

Guard Escorting Gaudet After Operation

Douglas Williams

Guard

Don Ryan

Screenplay

Anthony Coldeway

Story

William Clemens

Director

Kenneth Gamet

Screenplay

Raymond L. Schrock

Story

Frank Magee

Editor

Max Parker

Art Direction

Howard Jackson

Original Music Composer

Don Turner

Stunts

Bryan Foy

Associate Producer

George Barnes

Director of Photography

Ray Romero

Makeup Artist

Arthur Lueker

Assistant Director

Robert B. Lee

Sound

Sol Gorss

Stunts