So, this is a review for the whole series, not just this book.
Overall, this is a light, breezy, quick-reading series that is fun if not particularly substantial. Probably the biggest selling point is the characters, who are all likeable, even the supposed “Big Bads.” The “Big Bads'” conflict with the heroes is, interestingly, more a matter of differing point of view and priorities than “good” versus “evil,” and over the course of the series they work together a couple times and in the end manage to come to something of a compromise. There is also a running theme of “love” throughout the series that gives it some moments of unexpected depth. I don't know if I’d reread this anytime soon but I did enjoy it the first time through.