From a New York Times–bestselling author—the dark epic fantasy Coven trilogy concludes with the ultimate showdown between gods and mortals.

War has come to Fireach Speur.

The once forgotten xoconai empire has declared war upon the human lands to the west, and its first targets are the people of Loch Beag. All that stands in the way of the God King's armies and the rest of the world is Aoleyn, a barbarian witch, Talmadge, a fur trader turned hero, and what remains of the dwindling mountain tribes.

But not all hope is lost. Far away from Fireach Speuer, an ancient tomb is uncovered by Brother Thaddeus of the Abellican Church. Within it is the power to stop the onslaught of an encroaching empire and, possibly, reshape the very world itself.