A Court of Wings and Ruin

Feyre, now High Lady of the Night Court and secretly married to Rhysand, returns to the Spring Court as a spy, pretending to be brainwashed by Rhysand. She plots revenge against Tamlin while inciting jealousy and working to destabilize his court. Feyre accompanies Jurian and Hybern royals to check the magical wall. As war looms, Feyre, Rhysand, and the Night Court allies work to defeat the King of Hybern. Key events include the attempt to retrieve the Ouroboros Mirror, the destruction of the Bone Carver, and the nullification of the Cauldron's power by Amren and Feyre, which results in Rhysand sacrificing his life to fix the Cauldron, leading to his resurrection. Nesta, Cassian, and Elain also play crucial roles in the final confrontation with the king. The book concludes with a meeting to discuss a new treaty between humans and Fae.