The Weirn books

"In the Night Realm, vampires, shifters, weirns, and other night things passing for human prowl the streets ... but they still have to go to school! Ailis and Na'ya are pretty average students (NOT losers), but when a shadow starts looming and a classmate gets all weird, they are the first to notice. It gets personal, though, when Na'ya's little brother D'esh disappears -- It's time to confront the secrets of the forbidden mansion in the Silent Woods!--Back cover.