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 himself and his girlfriend being targeted by the killer.

• Seda Spettacoli
• CCC Filmkunst
• Tony Musante
• Suzy Kendall
• Enrico Maria Salerno
• Eva Renzi
• Umberto Raho
• Renato Romano
• Giuseppe Castellano
• Mario Adorf