When a woman is brutally attacked on a country road by an escaped inmate from a nearby psychiatric hospital, Sergeant Davie Gray must track him down before he strikes again. But Gray is already facing a series of deaths connected to legal highs and a local fairground, as well as dealing with his girlfriend Marie's bizarre behavior. As Gray investigates, he suspects a horrifying link between Marie and the man on the run—but how can he confront her when she's pushing him away? As Marie is pulled back into a violent past she thought she'd escaped, she makes an irrevocable decision. And when events come to a head at a house party on Willow Walk, can Gray piece together the puzzle in time to stop the sleepy town of Banktoun being rocked by tragedy once more?