To protect her people from a devastating invasion, Kelsea did the unthinkable—she gave herself and her magical sapphires to her enemy, and named the Mace, trusted head of the Queen’s Guard, as Regent in her place. While the Mace and his men embark on a dangerous mission to rescue their sovereign, Kelsea learns of a powerful new enemy, one who frightens even the evil Red Queen. Bolstered by a decades-old anger and growing stronger by the day, he’ll stop at nothing to destroy anyone who challenges him. Kelsea must unravel the secrets of her own heritage and of the Tearling’s past . . . with greater consequences than she could ever have imagined.

The climactic and satisfying close to the trilogy that captivated readers around the world.