
In a spooky hotel on the coast of France, two bands of crooks are working independently of the other in an attempt to steal the inherited fortune of an American girl, Sue Tally. Along the way the heiress is kidnapped, three murders are committed, a girl appears in two places at once, mysterious persons roam about the old hotel at night and mysteriously disappear, and there is a hidden room without any doors.

as Sue Talley

as Jim Sundean

as Mrs. Byng

as Grete Lovscheim

as Marcus Lovscheim

as Francis Talley

as Dr. Roberts

as David Lorn

as Marianne

as Marcel

as Michael Stravsky

as Commissaire of Police

as Pierre

as Elise

as The Chef (uncredited)