I’ll Be Gone in the Dark: One Woman’s Obsessive Search for the Golden State Killer (2018) describes author Michelle McNamara’s quest to identify a California serial killer who committed a rash of rapes and murders during the 1970s and 1980s.
The book examines both the serial killer’s crimes and the efforts made by law enforcement and amateur detectives to identify him.
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(Disclaimer: This is NOT the original book. If you’re looking for the original book, it is available from Amazon and Audible.)