The sixth gripping thriller in Lars Kepler's bestselling series featuring Joona Linna. A masked stranger watches his first victim through the window. Soon another three victims have been murdered and Stockholm is in the grip of terror. The police turn to - ex-Detective Joona Linna - but he's in prison. They offer him a chance to secure his freedom before the killer strikes again. You are his prey… The sixth gripping thriller in Lars Kepler’s bestselling series featuring Joona Linna. Perfect for fans of Stieg Larsson and Jo Nesbo. There’s a face at the window. A masked stranger stands in the shadow of a garden, watching his first victim through the window. He will kill him slowly – play him a nursery rhyme – make him pay. A killer in your house. The police offer ex-Detective Joona Linna a chance to clear his name: help Superintendent Saga Bauer track down the vicious killer terrorising Stockholm, before he strikes again. Only one man can stop him. Now Joona stands between a disturbed predator and its prey. He must catch a killer who hunts in the shadows and who is dangerously close to losing control…