When the savage lord of Ustalav's werewolves is mysteriously murdered, the nation's forests run with lycanthropic blood. War in the wilds soon spills onto the streets, as the people of the land, seeing the strife among their long-time foes, begin a hunt to scour the nation of the deadly shape-shifters. Entreated by a lord of the werewolves to help unite his savage people, the heroes must risk becoming tainted by the curse of lycanthropy as they race across the heart of the nation to find an outcast heir. But can they do so before bestial assassins and the agents of the Whispering Way find him, or the heroes, first? An adventure for 6th-level characters, this volume continues the Carrion Crown Pathfinder Adventure Path.