The Raven Cycle, Books 2-4

The Raven Cycle follows Blue Sargent, the daughter of a psychic, who becomes entangled with a group of private school students known as the Raven Boys as they search for the lost tomb of a Welsh king. Throughout the series, the group navigates supernatural mysteries, ancient prophecies, and complex relationships while dealing with the consequences of awakening a sleeping power in the Virginia mountains. As their quest progresses, the characters must confront their own destinies and the sacrifices required to protect one another.