Director: Dario Argento
An American writer living in Rome witnesses an attempted murder that is connected to an ongoing killing spree in the city and conducts his own investigation, despite him and his girlfriend being targeted by the killer.
Tony Musante
Sam Dalmas
Suzy Kendall
Julia
Enrico Maria Salerno
Inspector Morosini
Eva Renzi
Monica Ranieri
Umberto Raho
Alberto Ranieri
Renato Romano
Professor Carlo Dover
Giuseppe Castellano
Monti
Mario Adorf
Berto Consalvi
Pino Patti
Faiena
Gildo Di Marco
Garullo
Rosita Torosh
Victim
Omar Bonaro
Police Detective
Fulvio Mingozzi
Police Detective
Werner Peters
Antique Dealer
Karen Valenti
Tina
Carla Mancini
Girl Watching TV
Bruno Erba
Police Detective
Annamaria Spogli
Sandra Roversi (uncredited)
Giovanni Di Benedetto
Professor Rinaldi (uncredited)
Reggie Nalder
Needles (uncredited)
