Sire Alain de Maletroit
Charles Laughton
Voltan
Boris Karloff
Mary Bayless
George Bruggeman
Forrest Burns
George Calliga
Monique Chantal
Jack Chefe
Harry Cording
Herbert Evans
Franklyn Farnum
Charles Horvath
Blanche de Maletroit
Sally Forrest
Forbes Murray
Barry Norton
William H. O'Brien
Frank O'Connor
Eddie Parker
Joe Phillips
Tao Porchon
Scott Seaton
Ellinor Vanderveer
Patrick Whyte
Denis de Beaulieu
Richard Wyler
Corbeau
William Cottrell
Count Grassin
Alan Napier
Renville
Morgan Farley
Edmond de Maletroit
Paul Cavanagh
Talon
Michael Pate
Marion Gray
Music
Miklós Rózsa
Director
Joseph Pevney
Producer
Ted Richmond
Frank Skinner
Art Direction
Nathan H. Juran
Makeup Artist
Bud Westmore
William Lava
Short Story
Robert Louis Stevenson
Screenplay
Jerry Sackheim
Director of Photography
Irving Glassberg
Bernard Herzbrun
Set Decoration
Julia Heron
Eric Orbom
Music Director
Joseph Gershenson
Herman Stein
Costume Design
Rosemary Odell
Hairstylist
Joan St. Oegger
Hans J. Salter
Editor
Edward Curtiss
Russell A. Gausman
Sound
Glenn E. Anderson
Leslie I. Carey
Props
Robert Laszlo