A Court of Wings and Ruin (ACOTAR #3)

Feyre was married in secret to Rhysand and is now High Lady of the Night Court. She returns as a spy to the Spring Court with Tamlin, pretending that she had been brainwashed into staying with Rhysand in the Night Court for all those months. Secretly, Feyre is seething with anger and plots revenge. A Court of Wings and Ruin is book number three in the ACOTAR series.