A young heiress finds evidence suggesting that at night she acts under the influence of a family curse and has begun committing ghastly murders in a nearby park.

Don Porter
as Barry Lanfield

June Lockhart
as Phyllis Allenby

Sara Haden
as Martha Winthrop

Jan Wiley
as Carol Winthrop

Lloyd Corrigan
as Detective Latham

Dennis Hoey
as Inspector Pierce

Martin Kosleck
as Dwight Severn

Eily Malyon
as Hannah, the Housekeeper

Frederick Worlock
as Park Patrol Constable-in-Charge Ernie Hobbs

Clara Blandick
as Mrs. McBroom (uncredited)
CinemaSerf
A meandering tale of an heiress who begins to believe that she is a werewolf prone to escaping from her plush London home at night and savagely killing people. It could just be an early example of a serial killer because we see scant evidence of a she-wolf; indeed there are no special effects employ...