In a land without magic, an assassin is summoned to the castle. She has no love for the vicious king who rules from his throne of glass, but she has not come to kill him. She has come to win her freedom. If she defeats twenty-three murderers, thieves, and warriors in a competition, she will be released from prison to serve as the King's Champion. Her name is Celaena Sardothien. The Crown Prince will provoke her. The Captain of the Guard will protect her. And a princess from a faraway country will befriend her.

Everyone Celaena Sardothien loves has been taken from her. Now she returns to the empire - to confront the shadows of her past ...The fourth breathtaking instalment in the New York Times bestselling Throne of Glass series. Bloodthirsty for revenge on the two men responsible for destroying her life, and desperate to find out if the prince and his captain are safe, Celaena returns to Rifthold, the seat of so much evil. She has accepted her identity as Aelin Galathynius, Queen of Terrasen. But before she can reclaim her throne, there are dark truths to learn and debts to be paid. Aelin must stay hidden beneath her assassin's hood and draw on her mortal strength as Celaena to prevent the King of Adarlan from tearing her world apart. Only then can she fight for her people. Readers will be held rapt as Celaena's story builds to an agonising crescendo, packed with heart-pounding action and swoon-worthy romance.