Onyx Storm

Eighteen months of war college have left Violet Sorrengail battle-hardened, but the threats closing in on Navarre are bigger than anything Basgiath prepared her for. With enemies pressing from outside the wards and treachery festering within, Violet realizes the kingdom cannot hold without help—and the only allies who might turn the tide lie across uncharted seas.

The search takes Violet and her fellow riders far beyond the map they know, into unfamiliar lands where the rules of power, magic, and loyalty are different, and where every potential ally comes with a price. As she races to secure the army and the magic Navarre desperately needs, the secret she's guarding grows heavier, and the cost of the truth climbs higher.

The third book in Rebecca Yarros's Empyrean series widens the world beyond the college walls, trading some of the classroom trials for a perilous quest across new territory. It's a high-stakes middle chapter that deepens the mythology, tests the central romance under fresh pressure, and sets the board for the conflicts still to come.