As Finn, now 17, struggles with life after his captivity, the headstrong 15-year-old Gwen begins receiving calls in her dreams from the black phone and seeing disturbing visions of three boys being stalked at a winter camp known as Alpine Lake. Determined to solve the mystery and end the torment for both her and her brother, Gwen persuades Finn to visit the camp during a winter storm. There, she uncovers a shattering intersection between The Grabber and her own family’s history. Together, she and Finn must confront a killer who has grown more powerful in death and more significant to them than either could imagine.