Two schoolgirls, one quiet English village, and a killer who thought he’d gotten away with murder, until science caught up with him. In the 1980s, the brutal killings of Lynda Mann and Dawn Ashworth left Narborough living in fear and police desperate for a lead. What followed would change criminal investigations forever: the world’s first use of DNA profiling to crack a murder case, expose a false confession, and unmask the real predator hiding in plain sight.