The book: The Preacher by Camilla Läckberg (No. 2 in the Fjällbacka series)
The hook: The remains of two young women who had disappeared 20 years ago are found next to a new victim in this thrilling story of family secrets and religious fanatics. It alternates between the present investigation and the perspective of the murdered girls, including their final moments.
Fear factor: It's one thing to follow a crime from the safety of the detective's perspective, it's another to be put in the shoes of the murder victims when you know their macabre fate.