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..