The Hillside Strangler, later the Hillside Stranglers, is the media epithet for one, later discovered to be two, American serial killers who terrorized Los Angeles, California, between October 1977 and February 1978, with the nicknames originating from the fact that many of the victims' bodies were discovered on the wooded hillsides surrounding the city. The perpetrators were identified as cousins Kenneth Bianchi and Angelo Buono Jr.