Rome has come to Britannia. Its forces are marching north, claiming the land and the people as its own. The Crow Queen's fae court must stand against this new adversary or be swept away by the rolling tides of change. With her sacred pool in the path of the invading army, Maye is prepared to answer her queen's call to fight, even if it means allying with the druids she abhors. But then, one of the enemy washes onto her shores, injured and dying, and...