|Angelo Buono, Jr.|
|Birth name:||Angelo Buono, Jr.|
|Also known as:||The Hillside Strangler|
|Born:||October 5, 1934
Rochester, New York
|Died:||September 21, 2002 (aged 67)
|Cause of death:||heart attack|
|Number of victims:||10|
|Span of killings:||October 16, 1977 – February 16, 1978|
|Date apprehended:||October 22, 1979|
Buono was born in Rochester, New York to first generation Italian-American emigrants from San Buono, Italy. In the time leading up to the killings, Buono had already developed a long criminal history, ranging from failure to pay child support and grand theft auto to assault and rape. In 1975, when Buono was 41, he met Kenneth Bianchi. 
A self-described "ladies' man", Buono persuaded his younger cousin to join him in prostituting the women and young girls they brought to bed, holding them as virtual prisoners. In late 1977, the pair began killing them as well, claiming 10 documented victims by the time they were arrested in early 1979.
The legal case against Buono was based largely upon Bianchi's testimony. The case's original prosecutors from the Los Angeles County District Attorney's office moved to dismiss all charges against Buono and set him free.
Buono's trial would become the longest in American legal history, lasting from November 1981 until November 1983. During the trial, Bianchi, in exchange for a lighter sentence, testified against Buono. The jury convicted Buono on nine counts of murder.
In 1986, Buono married Christine Kizuka, a mother of three and a supervisor at the California State Department of Employee Development.
In 2007, Buono's grandson, Christopher Buono, committed suicide shortly after shooting his grandmother, Mary Castillo, in the head. Castillo was at one time married to Angelo Buono, and had five children with him, including Chris' father.