Boris Karloff
Role: Dr. Charles Gaudet
Nedda Harrigan
Role: Madame Lucien
James Stephenson
Role: Col. Armand Lucien
Adia Kuznetzoff
Role: Pierre
Rolla Gourvitch
Role: Collette
Edward Keane
Role: Dr. Duval
Robert Warwick
Role: Demonpre
Pedro de Cordoba
Role: Marcal
Richard Bond
Role: Georges
George Lloyd
Role: Dogface
Charles Richman
Role: Governor Beaufort
Stuart Holmes
Role: Gustav LeBrun
Leonard Mudie
Role: Advocate General
Egon Brecher
Role: Debriac
Frank Reicher
Role: President of Assize Court
Dick Botiller
Role: Pilot of Escape Boat
Al Bridge
Role: Captain of the Guards
Nat Carr
Role: Court Clerk
Glen Cavender
Role: Gendarme on Train
Davison Clark
Role: Captain of Gendarmes
Harry Cording
Role: Guard Accepting Bribe
Gino Corrado
Role: Man Escaping Gendarmes with Debriac
Eddie Foster
Role: Supply Clerk
Sol Gorss
Role: Guard Escorting Gaudet After Operation
John Hamilton
Role: Captain of Second Convict Ship
Ben Hendricks Jr.
Role: François - Sergeant of the Guards
Vera Lewis
Role: Gaudet's Housekeeper
Billy McClain
Role: Governor's Servant
Henry Otho
Role: Guard Handcuffing Pierre
Paul Panzer
Role: Jury Foreman
Alonzo Price
Role: Capt. Edvard Fearreau of the First Convict Ship
Dick Rich
Role: Guard Drugged by Gaudet
Cliff Saum
Role: Uniformed Gendarme
Francis Sayles
Role: Boatman Taking Madame Lucien to Mainland
Earl Smith
Role: Daniel - Madame Lucien's Servant
Walter Soderling
Role: Wagon Driver
Elliott Sullivan
Role: Gate Guard
Don Turner
Role: Guard Escorting Gaudet After Operation
Douglas Williams
Role: Guard