In 1997, four families' lives were torn apart when their daughters vanished without a trace. Years of grief and unanswered questions led them to one man who claimed to have the answers. But can he be trusted? Erin Moriarty of "48 Hours" revisits this chilling case, uncovering the final chapter in a mystery she's investigated for over two decades. Will justice finally be served? Dive into this gripping true crime story that explores the depths of human deception.