Spellsinger (Avalon, Web of Magic #5)

Emily, Kara and Adriane throw a rockin' benefit concert of the Ravenswood Wildlife Preserve. Thrilled that their fav band, Twist of Fate, has agreed to perform, the event is about to become the biggest party of the year. But no one can find out about the magical animals they've sworn to protect, and about the magic only the three of them found there. Only...one person does know, a shape-shifting creature sworn to detroy Ravenswood , and every living creature in it. She's got dark magic-and it just may be more powerful than the girls, and their animal friends, can resist. Unless they can discover the secret of Avalon soon, they may all be doomed.