"Gelya is a Vessel, a girl who channels the word of the One True God through song. Cloistered with the other Vessels of her faith, she believes—as all Ovinists do—that a saint imprisoned Elath the Great Demon centuries ago, saving humanity from earthly temptation. When Gelya stumbles into a deadly cover-up by the Ovinists’ military, she reluctantly teams up with Tavik, an enemy soldier, to survive. Tavik believes that Elath is actually a mother...