The Hypnotist (Lars Kepler, 2009)Read about the other entries on the list.
This is the first book to feature Detective Inspector Joona Linna. A family—a father, a mother and their daughter—has been brutally murdered in Tumba, Sweden. There is one surviving witness, the son, severely injured. When Joona Linna learns that there is yet another family member still alive, a big sister, he sets out to find her before the killer does. Additional conflict enters the story when Linna wants trauma expert Erik Maria Bark to hypnotize the boy to be able to find out what happened, despite Bark’s insistence to never hypnotize anyone again. When he breaks his promise, a terrifying chain of events is set in motion.
--Marshal Zeringue