I really enjoyed this one. It kept my attention throughout, I liked the world building and the characters. I grouped it with PNR, but its more of a sci-fi romance. 
 I also liked that the main issue was not a Big Misunderstanding (that gets blown out of proportion and could be easily solved with a simple conversation). The hero and heroine do come from different groups, one is a changeling (a panther shapeshifter), the other a Psy (powerful, emotionless psychics), so they have plenty of learning to do about each other. Of course, the Psy is not completely emotionless, a life-threatening problem for a Psy. They are tracking a Psy serial killer, and there is a conspiracy that hits close to home. 
 Good romance and introduction to other characters who are sure to have their starring turn in other books in the series. I'll be reading more in this series.