In London, the Metropolitan Police have set up a new Unsolved Murders Unit - a cold case squad - to catch the criminals nobody else can. Four victims. Four cases. All killers poised to strike again. And at the heart of all the investigations lies Detective Chief Inspector William Warwick. Only Warwick's genius for deductive reasoning, his fierce intelligence and his occasionally rash bravery can bring the criminals to justice, and put his nemesis behind bars. Print run 100,000.