The Bird with the Crystal Plumage Movie (1970) - Tony Musante, Suzy Kendall, Enrico Maria Salerno

The Bird with the Crystal Plumage Movie (1970) - Plot Synopsis: An American expatriate in Rome witnesses an attempted murder that is connected to an ongoing killing spree in the city, and conducts his own investigation despite himself and his girlfriend being targeted by the killer.
Director: Dario Argento
Writers: Dario Argento, Fredric Brown
Stars: Tony Musante, Suzy Kendall, Enrico Maria Salerno