When two bodies are found brutally murdered on a building site in Battersea, Detective Sergeant Calil Drake is first on the scene. He sees an opportunity: to solve a high-profile case, and to repair his reputation after a botched undercover operation almost ended his promising career in the Violent Crimes Unit. Assigned to work with the enigmatic forensic psychologist Dr Rayhana Crane, and on the hunt for an elusive killer, Drake’s investigations lead down the dark corridors