'It may take you a while to sleep after you finish it' Daily ExpressThe most chilling and terrifying serial killer thriller of the year, from international bestseller Lars Kepler.Sweden's most notorious serial killer.Jurek Walter was shot and killed years ago. The police moved on and managed to forget the darkness that had tainted their lives.Has come back from the dead.But now someone is leaving a trail of broken bodies across Sweden and the clues all point to Walter. Detective Joona Linna is ...