The Lost - A Beth-Hill Novel: Wild Hunt, #3

The Wild Hunt roamed the forest outside of Beth-Hill until the Council bound them for a hundred years. Nevertheless, a century of existence has made an indelible mark not easily forgotten for these ghostly myths that are no longer so ghostly or myth-like... Almost sixty years ago, Darkbrook, the only school of magic in the United States, opened its doors to students of decidedly different natures, sending out letters of invitation to the elves, the dragons, and the vampires.
The three who responded to the invitation banded together despite their differences but vanished only weeks later along with an entire classroom full of students and their teacher after a field trip gone horribly wrong. The Wild Hunt has healed and the Hounds have grown closer together, keeping Darkbrook's forest safe and secure for those who live there. Malachi, one of the eldest members of the Wild Hunt, has adapted to Josiah's spell to help him see, but when a demon boy trapped in the body of a human body for sixty years inside the school disrupts the newfound calm, the Hunt--and those they protect--are thrust into a struggle that should have ended long ago when a vampire, an elf, and a dragon vanished into the Mists.