In this episode, we explore the relentless pursuit of the Golden State Killer, a case that spanned decades and haunted California. Writer Michelle McNamara brought new attention to the terrifying case, dubbing him “The Golden State Killer” and amassing thousands of files in her personal investigation. Her book I’ll Be Gone in the Dark intensified the public’s fascination, paving the way for breakthroughs. We dive into how genetic genealogy, via GEDmatch, led to the unmasking of Joseph James DeAngelo, a former police officer with a chilling double life.