Will Thomas sacrifice everything to stop the Unceasing and protect Haddie? Thomas confronts the leader of the Unceasing in their hidden Albuquerque base and Haddie follows close behind. Detective Cooper, the coerced FBI, and the Unceasing's thugs hunt her and her friends until no one is safe. Haddie won't be able to return to Eugene, not until her or her dad stop the Unceasing. What waits under the hills of Coyote Canyon will shock them all and threatens to be more than Haddie can handle.