Son of Sam serial killer David Berkowitz may have had his first taste of blood at only 17. Five years before he went on his infamous NYC spree between 1976-77, shooting eight people and killing four, ...

Halloween night in New York City, 1981: a photographer and his young girlfriend are fatally shot, execution-style, in their Chelsea apartment. There is no forced entry, there are no obvious suspects ...

While the Netflix series lets these killers expound on their heinous acts, Mindhunter doesn’t always go into detail about each of the crimes. For those wanting to delve deeper, ET has put together a ...