Thirteen years after a gas explosion leaves Pearl with the mind of a five-year-old, her family’s guilt turns into suffocating protection—and her younger sister Sophie grows bitter in the shadows. When Sophie gets into college, she asks for one trip without Pearl. Left home alone, Pearl loses power, water, and food, but no one believes her calls for help. By the time the truth is discovered, Pearl has vanished into the dark, still insisting she never lied.