Five-year-old Mia remembers losing her sister Sophie—and the truth about Toby, the sweet-looking boy next door. He was never a child. He was a twenty-three-year-old man who had been tracking Sophie’s routines, even hiding under her bed. Then Mia opens her eyes in their Christmas-lit home and finds Sophie beside her, holding a plate of treats. She has been given another chance, and she refuses to waste it. But how can a little girl warn adults who see Toby as harmless? When he shows up at Mia’s school, shines a light into Sophie’s window, and leaves behind a driver’s license, the people around her finally start listening. As Jack, a school worker, and a detective follow the evidence, a trail of old photographs and storage records leads to Toby’s younger brother Nolan—and women who have been too afraid to speak. Can Mia protect Sophie this time, and help the others find their voices?