From the author of Everything You Want Me to Be , a People magazine and Wall Street Journal pick of the year's best books, comes a riveting and suspenseful thriller about the mysterious disappearance of a boy and his stunning return ten years later. There is a place in Minnesota with hundreds of miles of glacial lakes and untouched forests called the Boundary Waters. Ten years ago a man and his son trekked into this wilderness and never returned. Search teams found their campsite ravaged by what looked like a bear. They were presumed dead-until a decade later when the son appeared. Discovered while ransacking an outfitter store, he was violent and uncommunicative and sent to a psychiatric facility. Maya Stark, the assistant language therapist, is charged with making a connection with their high-profile patient. No matter how she tries, however, he refuses to answer questions about his father or the last ten years of his life. But Maya, who was abandoned by her own mother, has secrets, too. And as she is drawn closer to this enigmatic boy who is no longer a boy, she will risk everything to reunite him with his father who has disappeared from the known world.