Interrogating Vivian

On a cold Scottish winter morning, a terrified woman, covered in blood, is found wandering in a forest. She is rushed to hospital in a confused state. Her only words are, 'They're here!' Police officers retrace the woman's steps to the small isolated hamlet of Arbery. To their horror, the entire population is found butchered. Fifty three mutilated bodies are recovered in total, sending shock waves through the Scottish nation. Keen and Raeburn, two seasoned detectives, are sent to solve the case amid the mounting hysteria.