Angelo Anthony Buono Jr. was an American serial killer, kidnapper and rapist who, together with his adopted cousin Kenneth Bianchi, raped and murdered ten young women and girls between October 1977 and February 1978 in Los Angeles, California in what became known as the Hillside Strangler murders, as the victims were usually strangled to death and dumped on a hillside. In November 1983, after a two-year long trial, Buono was convicted of 9 counts of murder and subsequently sentenced to life imprisonment.