Both "Heart Thief" and "Heart Duel" are excellent. They are about this world that the author has created, a rather interesting world (sci-fi). Heart Thief is book 2 and follows Heart Mate, which I've not had the opportunity to read. The main male character in Heart Duel is mentioned in Heart Thief, and nothing more. You know of him and his family. A well-written story-line and likeable characterizations.
