It’s Not Her - Mary Kubica - Mary Kubica

Two families vacationing at a secluded lake resort are at the center of a chilling crime and mysterious disappearance in this twisty, unputdownable thriller Courtney Gray’s tranquil family vacation is shattered when she hears a blood-curdling scream from the lakeside cottage next door. There she finds the lifeless bodies of her brother and sister-in-law. Her teenage niece Reese is nowhere to be found, while her nephew Wyatt lies asleep upstairs, unharmed.