Books in the Chronicles of the Enchanted series

"Drip, Drip, Drip," Mason said in her ear, his touch burning her skin like acid. "So red. So sweet, but yet so bitter." She winced when he ran the tip of the blade over the already open cut. "Stop...." "Now," he said quietly, though menacingly, "are you going to come willingly? Or will I have to kill everyone in this room and have you watch?" She opened her eyes, finding the school empty. But there's... no one. Then a voice entered her ears. "Let her go, you bastard." Malachi.