Lucas II: The Obsession — Brandy McKinnon

Luke and Lucy survived the Legacy that was their father Lucas. The twin half-vampires are now at college but something just isn't right. Lucy is so wrapped up in her new boyfriend that she doesn't believe Luke when he tells her that there is another vampire and that he thinks it is coming after him. Celeste is the new girl in town and she has her sights set on Luke and nothing is going to stand in her way. Luke disappears and Lucy realizes too late that her brother may have been right but can she get him back before something aweful happens...like him becoming a full fledged vampire.