All the screaming in the world won't help!
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 he and his girlfriend being targeted by the killer.
- Release Date: February 27, 1970
- Runtime: 96 minutes
- Production countries: Germany, Italy
- Original Title: L'uccello dalle piume di cristallo
- Original Language: italiano (Italian)