This review will be pretty much pointless for anyone who hasn't read the first 8 books, so I'm not going to try to make it understandable for anyone who isn't familiar with the series.
First for the likes:
1) like how much Trent was in this book. He and Jenks are my favorite.
2) barely any sexual content (I'm probably one of the few people that could do without the sexual content in this series. romance is fine, but I'm not big on reading about other people's sex lives)
3) less Ivy/Rachel drama.
4) the plot was not predictable (to me at least, but I don't pick up on things, so maybe it was predictable to others), and I liked the plot twists thrown in there (I won't tell you what. As the Doctor would say, "Spoilers.")
1) Rachel is still having issues getting off her high horse (admittedly, she was able to at least slightly admit the hypocrisy of disdaining Trent even though she does things just as bad)
2) Despite the unpredictability of the plot, it did rather drag on a bit.
3) stupid witch ghost boy is still in the picture. Although I guess he couldn't just disappear. Kim Harrison could have conveniently left him out of the story. Maybe in between the last story and this one, Algaliarept could have killed him. I would have appreciated that.
If you're a fan of the series, I guess you will either love or hate this story depending on how much you like Trent. Since I would be content to read an entire series centered around him, this was good for me.