#1 INTERNATIONAL BESTSELLER - In this electrifying thriller from the author of Police and The Snowman, Inspector Harry Hole hunts down a serial murderer who targets his victims--on Tinder. The murder victim, a self-declared Tinder addict. The one solid clue--fragments of rust and paint in her wounds--leaves the investigating team baffled. Two days later, there´s a second murder: a woman of the same age, a Tinder user, an eerily similar scene. The chief of police knows there´s only one man for this case. But Harry Hole is no longer with the force. He promised the woman he loves, and he promised himself, that he´d never go back: not after his last case, which put the people closest to him in grave danger. But there´s something about these murders that catches his attention, something in the details that the investigators have missed. For Harry, it´s like hearing "the voice of a man he was trying not to remember." Now, despite his promises, despite everything he risks, Harry throws himself back into the hunt for a figure who haunts him, the monster who got away.