After a series of murders, a man finds out that his mother was bitten by a vampire bat during her pregnancy, and he believes that he may be the vampire committing the murders.
Ralph Morgan
as Paul Kristan
Pedro de Cordoba
as Anders Bizet
Maxine Doyle
as Marguerite Mane
Russell Gleason
as David
Mischa Auer
as Zan
Lucy Beaumont
as Mother Molly
Carl Stockdale
as John Mane
Barbara Bedford
as Martha Kristan
Robert Frazer
as Dr. Duprez
Ferdinand Schumann-Heink
as Franz Kristan
CinemaSerf
Kindly old doctor "Prof. Kristen" (Ralph Morgan) finds himself amidst a spate of brutal murders - but it's only when he is told that his pregnant mother was bitten by a bat before he was born, that he considers that he might be the man responsible - especially as he has become prone to blackouts whe...