Summer of Sam is a 1999 American crime thriller film about the 1977 David Berkowitz serial murders and their effect on a group of fictional residents of an Italian-American neighborhood in The Bronx in the late 1970s. The killer, David Berkowitz, his murders and the investigation are shown in the film, but the focus is on two young men from the neighborhood: Vinny, whose marriage is faltering due to his cheating, and Ritchie, Vinny's childhood friend who has embraced punk fashion and music.