Yet when a quest for vengeance forces him to shed animal form and seek out King Arthur, the Changer discovers that the darkest of dangers threaten the timeless realm. For Arthur's sworn enemies have risen once more to topple the king and spread chaos among humankind. The Changer himself will be the enemy's unwitting accomplice, unless he somehow stops the dreaded forces and diabolical powers threatening to destroy Arthur's kingdom--and all humanity.