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.
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The Bird with the Crystal Plumage (1970) is a horror, mystery, thriller movie running 1h 36m. Starring Tony Musante, Suzy Kendall, Enrico Maria Salerno. Rated 7.1/10 on TMDB. Watch it online free on ZapFlix.