It took me awhile to get into the Fever books. The first one was offered as part of B&N's Free Friday awhile back (I have a Nook). I started reading it and stopped, but for some reason started it again and got hooked. I do like that characters from her other books do make appearances later in the series. I really hope Christian MacKeltar gets his own book, but I think she's doing a book for Dani (whom I can only stand in small doses) next.

I thought I had heard that the next series would include Christian as one of the central characters along with Dani and Ryodan, so you might get your wish, though you'll have to put up with more Dani along with him.