A New York Times Bestselling Author An Edgar Award-winning Author Detective Cassie Dewell is the new deputy sheriff of Grimstad, a place people used to be from, but never headed to. Grimstad is now the oil capital of North Dakota. When the termperature drops to 30 below and a gang war heats up, Cassie realizes that she may be in over her head. She's on a collision course with a murderous enemy, and the key to it all might come in the most unlikely form: an undersized boy on a bike who keeps showing up where he doesn't belong.