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.
Edwige Fenech
as Julie Wardh
George Hilton
as George Corro
Ivan Rassimov
as Jean
Conchita Airoldi
as Carol Brandt
Manuel Gil
as Dr. Arbe
Carlo Alighiero
as Commissioner
Alberto de Mendoza
as Neil Wardh
Bruno Corazzari
as The Killer
Luis de Tejada
as Inspector
Marella Corbi
as Victim Who Escapes from the Killer
Miguel del Castillo
as Spanish Doctor
Brizio Montinaro
as Party Guest
