Police Comissioner Datti is investigating the murder of a female doctor whose murderer seems to be a thirty-fivish year old man. Soon another murder follows: Pianist Robert Dominici's girlfriend is found killed. The killer also challenges Datti on the phone and says he can't be caught since he has a secret which makes him invulnerable. In the meantime the clues seems to point in strange directions...
Cast
Michael York
Robert Dominici
Edwige Fenech
Hélène Martell
Donald Pleasence
Inspector Datti
Mapi Galán
Susanna
Fabio Sartor
Davide
Renato Cortesi
Agent Marchi
Antonella Ponziani
Gloria Datti
Carola Stagnaro
Dr. Carla Pesenti
Daniele Brado
Dr. Vanni
Caterina Boratto
Robert's Mother
Lewis E. Ciannelli
Chief Physician
Renata Dal Pozzo
Agent Corsi
Giovanni Lombardo Radice
Father Giuliano
Gianni Franco
Inspector
Marino Masé
Aging Expert
Achille Brugnini
Unknown
Giovanni Tamberi
Andrea
Loris Loddi
Danzil, a Cop
Hal Yamanouchi
Swordmaster
Diego Verdegiglio
Unknown
Raffaella Baracchi
Laura, Venice Prostitute
Emy Valentino
Unknown
Daniela Merlo
Mother (uncredited)
Raf Baldassarre
Man in Police Line-Up (uncredited)
Rossana Canghiari
Party Guest (uncredited)
Lella Cattaneo
Woman at Robert's Piano Concert (uncredited)
Ruggero Deodato
Man That Gets on Moped at Station (uncredited)
Giuseppe Marrocco
Man at Robert's Piano Concert (uncredited)
Benito Stefanelli
Man in Restroom (uncredited)
Crew
Ruggero Deodato
Director
Gigliola Battaglini
Screenplay
Vincenzo Mannino
Screenplay, Story, Associate Producer
Gianfranco Clerici
Screenplay, Story, Associate Producer
Daniele Alabiso
Editor
Rita Triunveri
Assistant Editor
Enrico Crescenzi
Assistant Editor
Giorgio Di Battista
Director of Photography
Roberto Tatti
Assistant Director
Pietro Innocenzi
Producer
Alberto Paluzzi
Production Assistant
Paolo Innocenzi
Production Design
Gianni Maddaleni
Camera Operator
Fabrizio Lucci
Camera Operator
Franca Viganò
Assistant Costume Designer
Giovanna Deodato
Costume Design
Carla Indoni
Hairstylist
Fabrizio Sforza
Makeup Artist
Franco Schioppa
Makeup Artist
Antonio Maltempo
Makeup Artist
Renato Giannelli
Sound Mixer
Tommaso Quattrini
Sound
Ettore Mancini
Boom Operator
Dino Galiano
Special Effects
Pino Donaggio
Original Music Composer
Maurizio Guarini
Musician
Maria Pia Mancini
Accountant
Antonio Murer
Props
Susanna Pellegrini
Script Supervisor
Ottaviano Dell'Acqua
Stunts
Alessandro Laurenti
Assistant Production Design
Martino Valente
Key Grip
Gaetano Coniglio
Gaffer
Giuliano Piermarioli
Production Manager
Clary Mirolo
Seamstress
Fabrizio De Martino
Unit Manager
Natale Massara
Conductor
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