You can’t ever know for sure what happens behind closed doors. Everyone from Wakarusa, Indiana, remembers the infamous case of January Jacobs, who was discovered in a ditch hours after her family awoke to find her gone. Margot Davies was six at the time, the same age as January—and they were next-door neighbors. In the twenty years since, Margot has grown up, moved away, and become a big-city journalist. But she’s always been haunted by the feeling that it could’ve been her. And the worst part is, January’s killer has never been brought to justice. When Margot returns home to help care for her uncle after he is diagnosed with early-onset dementia, it's like walking into a time capsule. Wakarusa is exactly how she remembers—genial, stifled, secretive. Then news breaks about five-year-old Natalie Clark from the next town over, who’s gone missing under circumstances eerily similar to January’s. With all the old feelings rushing back, Margot vows to find Natalie and to solve January’s murder once and for all. But the police, Natalie's family, the townspeople—they all seem to be hiding something. And the deeper Margot digs into Natalie’s disappearance, the more resistance she encounters, and the colder January’s case feels. Could January's killer still be out there? Is it the same person who took Natalie? And what will it cost to finally discover what truly happened that night twenty years ago?