#1 INTERNATIONAL BESTSELLER • The first of the Killer Instinct series featuring Detective Joona Linna: a triple murder, the one surviving witness—a boy with no memory of what happened—and the hypnotist hired to help uncover the truth.

“Full of surprises and more than enough twists to keep those pages turning well into the night.” —NPR

The police are desperate for information on the triple homicide. Detective Joona Linna enlists the help of hypnotist Erik Maria Bark. But when Bark unlocks the secrets in the boy’s memory, he triggers a terrifying chain of events that will put all their lives in jeopardy.