Nine feet under water in Bristol Harbour, a police diver finds a human hand.
The fact that there's no body attached is disturbing, but even more disturbing is the discovery a day later of the matching hand and the shocking evidence that the victim was still alive when they were removed.
Recently arrived from London, DI Jack Caffery is now part of Bristol's Major Crime Investigation Unit. His search for the victim leads him to a dark and sinister underworld; a place more terrifying than anything he has known before...