Jack’s younger sister Lucy has always been spoiled and capricious, but he never suspected that she might not be human until his father reveals a long-held secret: Lucy is not the baby born into their family, but one that was substituted for their real child as an infant. This knowledge, and Lucy’s abduction by the Lady of the Lake, compels Jack headlong into a new adventure in the realm of elves. Familiarity with the first volume about Jack and his family, The Sea of Trolls (A Richard Jackson Book / Atheneum, 2004), will ease readers entry into this original story set in Britain around the year 790 A.D., at a time when beliefs in the traditional gods and Christianity are colliding. Memorable characters (human and otherwise), a gallant quest, and frequent dollops of humor combine in this second installment in a planned three-book series. (Ages 10–14)