From the bestselling author of The Pallbearers Club, A Head Full of Ghosts, and The Cabin at the End of the World, a gripping novel in which the mysterious disappearance of a teenage boy is only the beginning of unimaginable terrors. "An atmospheric, gut-twisting descent." --NPR Late one night, Elizabeth Sanderson receives the devastating news that every mother fears: her thirteen-year-old son, Tommy,...