An instant New York Times bestseller! A debut high-stakes fantasy romance trilogy set against a once-in-a-generation duel to the death between rival witches and dragon riders as they battle to control the source of all magic in their kingdoms. Perfect for fans of Fourth Wing, the Throne of Glass series, and Red Queen.

You duel or you die. Astrid has always known she is destined to die. She is the last Nachstern witch and heir to the Queendom of Arturea, cursed by a centuries-old covenant to duel the heir to the Kingdom of Vatra for the source of all magic: the Heart. And now Astrid's time is up. She is heading into enemy territory to face Prince Zryan, the most powerful dragon rider in eons, with only her familiar, her potions, and her wits to aid her. She is going to die, and any chance her queendom has of curing the Blight that's ravaging the lands and killing her people will die with her. Meanwhile, deep in dragon country, Skylar and her travelling troupe arrive in Vatra's capital, ready to profit off the legions of spectators swarming to the city ahead of the duel. She despises the royals and all they stand for, especially as the King's guard murdered her mother. But when her best friend disappears, suspected to have been taken in the conscription, her search takes her closer to the royals than she ever could have imagined. As the duel looms over the kingdom, Skylar and Astrid's fates intertwine. They must battle a growing rebellion, their inner demons, and ultimately, those they love most, to determine if together they will save-or doom-their world.