Seconded from London to Bristol, Caffery is trying to leave his personal life behind, but he cannot escape the memories of his younger brother’s murder and the suspect who went free. When police diver Sergeant Phoebe “Flea” Marley discovers a freshly severed human hand in Bristol’s harbour and its mate buried under a restaurant’s doorstep, Caffery is there to lead the investigation. But rather than find answers, or a body to match those hands, Caffery and Flea discover a terrifying underworld of drug addiction, ritual mutilation and muti, African medicine magic.