Continues the richly atmospheric historical fantasy trilogy about shapeshifters, this time set in Britain and Gaul during the glory years of Caesar's Roman empire. Maeniel is drawn into the lives of men when he is captured by a magnificent Celtic warrior sorceress, who thirsts for revenge against Julius Caesar. She seduces and binds him within a circle of standing stones, and too late, he realizes that he cannot return to his wolf form so long as he is a prisoner of her magic. As the druids of Gaul force him to become their instrument of revenge Maeniel must draw upon all his primitive powers to find a way to win his freedom, while protecting his brother and sister wolves from extinction. But the path to freedom leads to the gates of Rome, and the most powerful -- and dangerous -- man in the world.