The Golden State Killer is a burglar, rapist serial killer who has terrorized California for decades starting in the 1970s. One man is believed to have committed as many as 50 sexual assaults and over 10 murders. Nancy Grace explores the case with Jane Carson-Sandler, the 5th victim and author of "Frozen in Fear: A True Story of Surviving the Shadows of Death," Michelle Cruz, sister of a murder victim, Billy Jenson, an investigative journalist who completed the raw chapters of victim Michelle McNamara’s “I’ll Be Gone in the Dark,” Paul Haynes, a researcher on McNamara’s book, and Cold Case Research Institute director Sheryl McCollum.