Cleo is a cold-blooded assassin for the Council. A master of stealth, nearly impossible to find—let alone kill. As the Council prepares its devastating defensive, the Slayers call the world to war. Old allies and new armies from across the continent answer. But Cleo’s ultimate weapon is her best-kept secret: a shocking connection to Styk that could change the course of the coming do-or-die battle—not to mention the Slayers’ future—forever.