A stranger wearing a mask stands in the shadow of a garden. He's watching his first victim through the window. He will kill him slowly, make it last - play him a nursery rhyme - make him pay. There's only one person the police can turn to - ex Detective Joona Linna - but he's serving time in a high-security prison. So they offer him a chance to secure his freedom: help Superintendent Saga Bauer track down the vicious killer known as the Rabbit Hunter, before he strikes again. Soon another three victims have been murdered and Stockholm is in the grip of terror. Joona Linna must catch a disturbed predator, whose trail of destruction leads back to one horrific night of violence - with consequences more terrifying than anyone could have imagined.