Boris Karloff

Dr. Charles Gaudet

Nedda Harrigan

Madame Lucien

James Stephenson

Col. Armand Lucien

Adia Kuznetzoff

Pierre

Will Stanton

Bobo

Edward Keane

Dr. Duval

Robert Warwick

Demonpre

Pedro de Cordoba

Marcal

Tom Wilson

Emil

John Harmon

Andre

Richard Bond

Georges

Sidney Bracey

Soupy

George Lloyd

Dogface

Stuart Holmes

Gustav LeBrun

Leonard Mudie

Advocate General

Egon Brecher

Debriac

Frank Reicher

President of Assize Court

James Blaine

Guard

Al Bridge

Captain of the Guards

Nat Carr

Court Clerk

Davison Clark

Captain of Gendarmes

Harry Cording

Guard Accepting Bribe

Eddie Foster

Supply Clerk

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

Vera Lewis

Gaudet's Housekeeper

Billy McClain

Governor's Servant

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

Elliott Sullivan

Gate Guard