2007 book 182

Tana French's In the Woods
This mystery involved an Irish homicide detective and his partner who take on the case of a young girl whose death may be related to another child murder that took place twenty years earlier. The twist here is that one of the detectives was the only survivor of the earlier murder, but has no memory of the event. French does a great job of ramping up the tension, though one key piece is fairly obvious to a close reader before it is to the detective which is slightly frustrating. I had seriously mixed feelings about the ending (though it was entirely suitable), but I read the whole thing in one sitting so it gets a B+.