96 minutes
8/10/1974
An unidentified fifteen year-old girl is found hanged after an anonymous tip-off. The girl, Silvia Polvesi, is soon discovered to have been murdered. A peeping tom is caught with photos of her having sex with a teenage drop-out but he is later released due to lack of evidence. The investigation, conducted by Inspector Silvestri and the assistant public prosecutor Vittoria Stori, focuses on the girl's parents. It transpires that a private detective, Ruggero Pollente, was hired by Silvia's mother because the latter was concerned about her activities. As a conspiracy begins to emerge, Pollente's body is found dismembered and his girlfriend is subsequently attacked by a machete-wielding killer clad in motorcycle gear...
Giovanna Ralli
as Asst. DA Vittoria Stori
Claudio Cassinelli
as Insp. Silvestri
Mario Adorf
as Insp. Valentini
Franco Fabrizi
as Bruno Paglia
Farley Granger
as Mr. Polvesi
Marina Berti
as Mrs. Polvesi
Paolo Turco
as Marcello Tosti
Corrado Gaipa
as DA
Micaela Pignatelli
as Rosa
Ferdinando Murolo
as Sgt. Giardina
Salvatore Puntillo
as Napoli
Eleonora Morana
as Polvesi's Housemaid
Sherry Buchanan
as Silvia Polvesi (as Cheryl Lee Buchanan)
Roberta Paladini
as Patrizia Valentini
Luigi Antonio Guerra
as Reporter
Renata Moar
as Laura
Adriana Falco
as Giuliana Bigi
Clara Zovianoff
as Mrs. Talenti
Leonardo Severini
as Agt. Russo
Lorenzo Piani
as Reporter
Bruno Alias
as Cop / Reporter (uncredited)
Giancarlo Badessi
as Paglia's Lawyer (uncredited)
Francesco D'Adda
as Doctor (uncredited)
Attilio Dottesio
as Coroner (uncredited)
Giuseppe Marrocco
as Cop (uncredited)
Steffen Zacharias
as Prof. Beltrame (uncredited)
Luciano Zanussi
as Cop (uncredited)