Now this one is on my Challenge list. I very much enjoyed The Outlaw Demon Wails (Rachel Morgan/The Hollows, Book 6) by Kim Harrison.
The Outlaw Demon Wails is the sixth book in the Hollows series. I really like the series, but I wouldn't recommend picking up this book if you haven't read the other 5. That being said, it was a good read. It definitely had a new tone to the story writing. Rachael is trouble with a capital T. If there is a safe choice or a dangerous one, she'll go for danger every time. At least that was the way she operated in the other 5 books. In this one, she spends a lot of time fighting herself and her instincts, to stay out of trouble....which of course, puts her in even more trouble.
I'm wondering if there will be a book 7. Harrison has wrapped up most of the plot lines of the series, but she did introduce a few new ones. I know if she writes more books set in this world, I'll read them.