

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
Julie Wardh

George Hilton
George Corro

Ivan Rassimov
Jean

Conchita Airoldi
Carol Brandt

Manuel Gil
Dr. Arbe

Carlo Alighiero
Commissioner

Alberto de Mendoza
Neil Wardh

Bruno Corazzari
The Killer

Luis de Tejada
Inspector

Marella Corbi
Victim Who Escapes from the Killer

Miguel del Castillo
Spanish Doctor

Brizio Montinaro
Party Guest

Pouchi
Victim in the Shower

Diomira Vidotto
Room Maid

Giuseppe Marrocco
Neighbor (uncredited)

Francesco Narducci
Police Photographer (uncredited)

Oscar Sciamanna
Party Guest (uncredited)
Nora Orlandi
Sound
Antonio Crescenzi
Production
Vittorio Caronia
Writing
Luciano Martino
Production
Eugenio Alabiso
Editing
Ernesto Gastaldi
Writing
Eduardo Manzanos
Writing
Sergio Martino
Directing
Pietro Ortolani
Sound
Franco Fogagnolo
Production
José Luis Galicia
Art
Jaime Pérez Cubero
Art
Florian Trenker
Camera
Emilio Foriscot
Camera
Franco Fogagnolo
Production
Giancarlo Ferrando
Camera
Paolo Ormi
Sound
Mirella Malatesta
Directing
Riccardo Domenici
Costume & Make-Up
Amedeo Moriani
Editing
Eduardo Manzanos
Writing
Michele Picciaredda
Camera
Francisco Rodríguez
Directing
Mario Di Salvio
Costume & Make-Up
Vittorio Caronia
Directing
Florian Trenker
Production
Francesco Narducci
Camera
Lamberto Palmieri
Production
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