In this sequel to The Sea of Trolls (2004), Jack discovers his sister Lucy is a changeling, and he is off on a quest to find his real sister and bring her home. With the help of the Bard and Pega, the slave girl he has freed, Jack goes to St. Filian’s Well, accidentally causes an earthquake and ends up in the Land of the Silver Apples, where elves rule and time stands still. As the middle volume of a planned trilogy set in eighth-century Britain, this takes its shape from the whole: It can stand on its own, but it mostly enlarges the world of the first volume. It’s not the quest itself that’s memorable, but the majestic sweep of Farmer’s storytelling, from the story of Lucifer and the battle of the angels to the Man in the Moon, the goddess Hel and any number of hobgoblins, yarthkins, knuckers and kelpies. Jack, Pega and Thorgil prove strong and capable in ways they themselves never suspected, and readers will look forward to the final installment. (appendix, sources) (Fiction. 10-14)