From New York Times bestselling author John Connolly, a wonderfully strange and brilliant novel about a boy and his dog and their journey to escape the wrath of demons.

Samuel Johnson is in trouble. Not only is he in love with the wrong girl, but the demon Mrs. Abernathy is seeking revenge on him for his part in foiling the invasion of Earth by the forces of evil. She wants to get her claws on Samuel, and when Samuel and his faithful dachshund, Boswell, are pulled through a portal into the dark realm, she gets her chance.