"Detective Casey Duncan has noticed fewer and fewer residents coming into the hidden town of Rockton, and no extensions being granted to current residents. Her boyfriend, Sheriff Eric Dalton, presumes it's the natural flux of things, but Casey's not so sure. It seems like something bigger is happening in the small town they call home. When an injured hiker stumbles in from the woods, someone who seems to have come to the Yukon for a wilderness vacation but instead is now fighting for her life, it's all hands on deck. What--or who--attacked this woman, and why? Because the woman is unconscious, and they have no leads, Casey and Eric don't know where the threat is coming from. Plus, the residents of their deeply secretive town are uneasy with this stranger in their midst. Everyone in Rockton wants this mystery solved--and fast. In the latest riveting thriller from number one New York Times bestselling author Kelley Armstrong, the paranoia increase--along with the stakes--as the town of Rockton tries to solve the latest mystery at its door." - From Publisher