Throne of Glass

In a land without magic, an assassin has been summoned. Her name is Celaena Sardothien. Celaena comes not to kill the king but to win her freedom. If she defeats twenty-three killers, thieves, and warriors in a competition, she is released from prison to serve as the king’s champion. But when her competitors start dying one by one, Celaena’s fight for freedom becomes a fight for survival, and a desperate quest to root out the evil before it destroys her world.