Now Cat and Bones have a worse problem, the leader of the ghouls is rising up to bring Cat down. This causes them to seek out Marie (Undead Queen of New Orleans, crazy woman) who has her own reason for `helping' Cat. Most of this book centers on the quest to find Apollyon as well as trying to discover just where the Undead Queen stands. While book four was full of war, angst and terror, this one is more subtle. I have to say I loved book one and two, three I could have done without, and four was better, I liked this installment, and especially that Cat is finally coming into her own. I know that's funny to say since she's already gained a ton of powers, she's teamed up with leaders and armies, but in this book she's finally growing up. She trusts Bones, she no longer is led by fiery emotion, but thinks things through. She also is a little more likable for those of you who found her oftentimes angsty whining annoying. A lot of the time it's hard to grow a couple together over the course of a series, that's why most authors center each installment on a different couple, Frost has done a great job, one I was hoping but not expecting to continue. I really like Bones and Cat's interaction with each other in this one and am looking forward to the next. Enjoy!