Joseph Pevney Director Charles Laughton Sire Alain de Maletroit Actor Boris Karloff Voltan Actor Sally Forrest Blanche de Maletroit Actor Richard Wyler Denis de Beaulieu Actor William Cottrell Corbeau Actor Alan Napier Count Grassin Actor Morgan Farley Renville Actor Paul Cavanagh Edmond de Maletroit Actor Michael Pate Talon Actor Jerry Sackheim Screenwriter Ted Richmond Producer Irving Glassberg Cinematographer Edward Curtiss Film Editing Bernard Herzbrun Art Director Nathan Juran Art Director Eric Orbom Art Director Russell A. Gausman Set Decoration Julia Heron Set Decoration Rosemary Odell Costume Design