All Cast
Lionel Barrymore
Professor Zelin
Elizabeth Allan
Irena Borotyn
Bela Lugosi
Count Mora
Lionel Atwill
Inspector Neumann
Jean Hersholt
Baron Otto
Henry Wadsworth
Fedor Vincente
Donald Meek
Dr. Doskil
Jessie Ralph
Midwife
Ivan F. Simpson
Jan
Franklyn Ardell
Chauffeur
Leila Bennett
Maria
June Gittelson
Annie
Carroll Borland
Luna
Holmes Herbert
Sir Karell Borotyn
Michael Visaroff
Innkeeper
Egon Brecher
Coroner (uncredited)
Robert Greig
Fat Man (uncredited)
John George
Gypsy (uncredited)
Louise Emmons
Old Gypsy Woman (uncredited)
Eily Malyon
Guy Bellis
James Bradbury Jr.
Rosemary Glosz
Tiny Jones
Jane Mercer
Torben Meyer
Patricia Reel
Christian Rub