A video-clip is sent to the National Criminal Investigation Department. Someone has secretly filmed a woman through her window from the garden. The next day she is found dead after a frenzied knife-attack.The police receive a second film of another unknown woman. There is no way of identifying her before time runs out.When her husband finds her he is so traumatised that he cleans the whole house and puts her to bed. He may have seen a vital clue, but is in such an extreme state of shock that the police are unable to question him.

Psychiatrist Erik Maria Bark is called in to hypnotise him - but what the man tells him under hypnosis leads Erik to start lying to the police.If the lights are on, a stalker can see you from outside. But if the lights are off, you can't see a stalker who is already inside the house.

About the Author
A No. 1 bestselling international sensation, Lars Kepler has sold in excess of 4.5 million copies of the Joona Linna series around the world. The Sandman is the fourth Joona Linna thriller. Lars Kepler is the pseudonym for writing duo, Alexander and Alexandra Ahndoril. They live with their family in Sweden.