In "A Court of Mist and Fury" by Sarah J. Maas, Feyre navigates the complex politics, passion, and dazzling power of her new world. As a greater evil looms, she must harness her harrowing gifts and heal her fractured soul to shape her future and the future of a world in turmoil. After being made High Lady of the Night Court, Feyre returns to the Spring Court as a spy, now Rhysand's equal. She rescues Rhysand from the King of Hybern's forces and prepares for the coming war.