House on the Edge of the Park
La casa sperduta nel parco (original)
Alex (David Hess) is a darkly sinister thug driving around New York City at night when he spots a young woman (Karoline Mardeck) driving alongside him. He follows the woman to a nearby park where he cuts her off, gets out of his car, and runs into hers where he throws her into the back seat and proceeds to savagely rape her before strangling her to death. He takes her locket as a trophy to another one of his many killings.
Starring David Hess, Annie Belle, Giovanni Lombardo Radice, Lorraine De Selle, Christian Borromeo, Marie Claude Joseph, Gabriele Di Giulio, Brigitte Petronio, Karoline Mardeck, Edward Mannix
Watch "House on the Edge of the Park" on Amazon released in 1980. It's a horror and thriller movie, and has a rating of 5.7 out of 10 from Imdb which is fairly okay for this kind of movie, and is currently only available for purchase or rent.