Investigator Cassie Dewell's three-year hunt for the serial killer known as 'The Lizard King' comes to a climax. For three years, Investigator Cassie Dewell has been hunting the serial killer known as The Lizard King. Twice she has come close to taking him, but now, working for the Bakken County, North Dakota sheriff's department, Cassie has set what she believes is the perfect trap. But the plan goes horribly wrong, and the blame falls on Cassie. Disgraced, she loses her job and, worse, is put under investigation. At the same time, Kyle Westergaard, a troubled kid whom Cassie has taken under her wing, has disappeared, telling everyone he is going on a long-planned adventure. Kyle's grandmother begs Cassie to find him and with nothing else to do, she agrees. But in the same way that two streams converge into a river, Kyle's disappearance may be more sinister than anyone suspects. Cassie's a lone wolf now – with no allies, no support, and only her own wits to rely on – and she will face a killer who is as ruthless as he is cunning. Can she do it alone?