It's always darkest before the dawn. Cassie hasn't felt this alone since she moved to New Salem and joined the Circle--the closest thing to a family she's ever known. But now that the Circle has been possessed by powerful evil spirits, Cassie is left with no choice but to turn to her dark side to rescue them. As she struggles to get through to her friends and her soul mate, Adam, she finds an unexpected ally--one who will tempt her more than ever...