Why did so many well-trained investigators miss the killing spree of Billy Chemirmir? And what does that mean for other unsolved murders? Learn more about your ad choices. Visit podcastchoices.com/adchoices

Was Billy Chemirmir a brilliant criminal mastermind? Or just lucky enough to slip through the cracks of a broken patchwork system?  More importantly, which reality is more terrifying? Learn more about your ad choices. Visit podcastchoices.com/adchoices