The powerful conclusion to the series! The dark machines are on the march. In their path, a lone girl waits. In Yevliesza's adopted land, a vast army of demonic engines is massing and, in the crossings between the realms, only she can stop them. As ever, her heart belongs to Valenty, who has sworn to find her again across a chasm of war and duty. But she has a dilemma. If she uses her rare power to block the invaders at the Gates, she risks bringing the arisen worlds to ruin. Her only hope is to unlock the deeper secrets of the Mythos crossings. She has no time to lose. The sorceress Nashavety is coming home. Accompanying an army of conquest, she will wield an immense and ancient magic which for ages has rested in fitful sleep. Soon it will awaken. In its path, the girl with the lost power.