Night Ripper 1986 Il mostro di Firenze

Every summer on a full moon night..

A string of sex murders has been plaguing Florence for almost 15 years, in which a serial killer brutally murders couples who are sneaking "a quickie" in public areas. A writer who is doing research for a book about the crimes sets out to uncover the identity of the killer, aided by his beautiful girlfriend. Based on a true story.