The Number One bestselling crime series featuring Dr Tony Hill, hero of TV-s Wire in the Blood, written by the award-winning Val McDermid. The hunt for a serial killer leads from Britain through Europe in this terrifying psychological thriller.A twisted killer targeting psychologists has left a grisly trail across Europe.Dr Tony Hill, expert at mapping the minds of murderers, is reluctant to get involved. But then the next victim is much closer to home-Meanwhile, his former partner DCI Carol Jordan is working undercover in Berlin, on a dangerous operation to trap a millionaire trafficker. When the game turns nasty, Tony is the only person she can call on for help.Confronting a cruelty that has its roots in Nazi atrocities, Tony and Carol are thrown together in a world of violence and corruption, where they have no one to trust but each other.