"A French doctor sentenced for treason performs brain surgery on the prison commandant's daughter."
Boris Karloff
as Dr. Charles Gaudet
Nedda Harrigan
as Madame Lucien
James Stephenson
as Col. Armand Lucien
Adia Kuznetzoff
as Pierre
Rolla Gourvitch
as Collette
Will Stanton
as Bobo
Edward Keane
as Dr. Duval
Robert Warwick
as Demonpre
Pedro de Cordoba
as Marcal
Tom Wilson
as Emil
John Harmon
as Andre
Richard Bond
as Georges
Earl Gunn
as Leon
Sidney Bracey
as Soupy
George Lloyd
as Dogface
Charles Richman
as Governor Beaufort
Stuart Holmes
as Gustav LeBrun
Leonard Mudie
as Advocate General
Egon Brecher
as Debriac
Frank Reicher
as President of Assize Court
James Blaine
as Guard
Dick Botiller
as Pilot of Escape Boat
Al Bridge
as Captain of the Guards
Nat Carr
as Court Clerk
Glen Cavender
as Gendarme on Train
Davison Clark
as Captain of Gendarmes
Neal Clisby
as Jules
Harry Cording
as Guard Accepting Bribe
Gino Corrado
as Man Escaping Gendarmes with Debriac
Earl Dwire
as Priest
Eddie Foster
as Supply Clerk
Galan Galt
Sol Gorss
as Guard Escorting Gaudet After Operation
Frank Hagney
John Hamilton
as Captain of Second Convict Ship
Ben Hendricks Jr.
as François - Sergeant of the Guards
Stanley King
Vera Lewis
as Gaudet's Housekeeper
Billy McClain
as Governor's Servant
Henry Otho
as Guard Handcuffing Pierre
Paul Panzer
as Jury Foreman
Alonzo Price
as Capt. Edvard Fearreau of the First Convict Ship
Dick Rich
as Guard Drugged by Gaudet
Cliff Saum
as Uniformed Gendarme
Francis Sayles
as Boatman Taking Madame Lucien to Mainland
Earl Smith
as Daniel - Madame Lucien's Servant
Walter Soderling
as Wagon Driver
Elliott Sullivan
as Gate Guard
Don Turner
Douglas Williams
Kenneth Gamet
Screenplay
Anthony Coldeway
Story
Don Ryan
William Clemens
Director
Raymond L. Schrock
Bryan Foy
Associate Producer
Arthur Lueker
Assistant Director
Stunts
George Barnes
Director of Photography
Ray Romero
Makeup Artist
Howard Jackson
Original Music Composer
Max Parker
Art Direction
Robert B. Lee
Sound
Frank Magee
Editor
