"Detective Elin Warner unravels the mystery behind the disappearance of a young woman in a propulsive new thriller from the New York Times bestselling author of The Sanatorium. Since the dark events that scarred her childhood, Kier Templer escaped her hometown to live life on the road. She and her twin have never lost contact until, on a trip to a Portuguese national park, Kier vanishes without a trace. Detective Elin Warner arrives in the same park...