What would you do if the past showed up on your doorstep? A woman who grew up in a cult must decide if she can trust the stranger claiming to have answers to the dark mysteries of her childhood in this irresistible thriller. "I tore through this book and was genuinely shocked by its ending!"-Ana Reyes, New York Times bestselling author of The House in the Pines For decades, the whereabouts of The Fifteen has been an unsolved mystery. All the members of this reclusive commune outside Philadelphia vanished twenty years ago, except for one: a twelve-year-old girl found wandering alone on the side of the road. In the years since that morning, Lee Burton has tried to put the pain of her past behind her, building a new identity for herself with a doting husband and seven-month-old daughter, Lucy. But motherhood is proving a bigger challenge than she anticipated. She doesn't want to let Lucy out of her sight even for a moment. She can't return to work. She's not sleeping, and she has started spiraling into ...