"When the former Baron Morgarath escaped to avoid punishment for treason, an uneasy peace fell on the kingdom of Araluen. But Morgarath, now in hiding, is already planning his next move, recruiting an army of savage beasts known as Wargals. Newly crowned King Duncan knows he must assemble his troops for battle. To unveil the full extent of Morgarath's plans, Halt prepares for a seemingly impossible task-- climbing the deadly cliffs of the Mountains of Rain and Night and venturing deep into enemy territory to spy. After all, the winner of this war could be determined by one wrong move, and the fate of a kingdom is at stake."--Back cover.

"First published in the United States of America by Philomel Books ... 2016"--Title page verso. Includes excerpt from author's first book in the Ranger's Apprentice series, "The Ruins of Gorlan" in the back of the book.