A New York Times Bestseller -- For centuries the Four Lands have been protected by magic-enhanced borders from the dark dimension known as the Forbidding and the profound evil imprisoned there. But now the barriers have begun to erode, and generations of bloodthirsty, monstrous creatures are poised to spill forth. Young Elf Arling Elessedil possesses the enchanted means to close the breach. But she has fallen into the hands of the Federation, and only her determined sister, Aphen, can save her.
