When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.
as Julie Wardh
as George Corro
as Jean
as Carol Brandt
as Dr. Arbe
as Commissioner
as Neil Wardh
as The Killer
as Inspector
as Victim Who Escapes from the Killer
as Spanish Doctor
as Party Guest
as Victim in the Shower
as Room Maid
as Neighbor (uncredited)
as Police Photographer (uncredited)
as Party Guest (uncredited)
