Elena survived the witch king's clutches and the deadly witch trials to return to Gray Haven. Yet, she is far from her heart's desire—to save the man she loves. As she and her daring companions take one last quest into enemy territory to save Jon, Elena will face hardships she's never imagined. Meanwhile, as rumors of monstrous forces gather on the horizon, an unspeakable tragedy shatters Elena's world. A darkness grows in Elena's soul, caused by the awakening of the black magic within her and soon finds herself on a deadly path, at risk of becoming exactly the kind of monster she is trying to kill. But if Elena can't find the strength to fight not only the darkness inside her, but the evil about to be unleashed, it could mean the end of everything.