When a young troll named Hawthorn is stolen from Fairyland by the Red Wind, he becomes a changeling – a human boy – in the strange city of Chicago, a place no less bizarre and magical than Fairyland when seen through trollish eyes. Left with a human family, Hawthorn struggles with his troll nature and his changeling fate. But when he turns twelve, he stumbles upon a way back home, to a Fairyland much changed from the one he remembers. Hawthorn finds himself at the center of a changeling revolution–until he comes face to face with a beautiful young Scientiste with very big, very red assistant.

Time magazine has praised Catherynne M. Valente's Fairyland books as "one of the most extraordinary works of fantasy, for adults or children, published so far this century." In this fourth installment of her saga, Valente 's wisdom and wit will charm readers of all ages.