"Raven King" is a fantasy novel by Maggie Stiefvater, part of the Raven Cycle series. It follows the story of Blue Sargent, a girl from a family of psychics, and her interactions with a group of boys from the nearby Aglionby Academy, particularly Gansey, who is on a quest to find a legendary Welsh king. The book explores themes of friendship, destiny, and the supernatural, as the characters navigate their relationships and the mysteries surrounding the Ley Lines and the ancient king. The narrative blends elements of magic, adventure, and personal growth, making it a compelling read for fans of young adult fantasy.