Wow! What a book! What a series! If you love urban fantasy, this is a great series to read, but it MUST be read in order. This book will absolutely make no sense if you haven't read the previous 4 books. 
 So much happened in this book and, I will admit, I got a little confused in the middle. There was so much travel through the silvers and wondering who was who. (I won't say more.) But, it all came together in the end. 
 I won't say that the end was a Happily Ever After, but it was a complete ending. I was happy to read that the author is working on more books set in the Fever World because there was so much more that could be written and so many characters whose stories could be developed, including Mac and Barrons. By no means do we know all there is to know about them and their pasts. 
 I read all 4 of the previous books and then re-read them all on audio in preparation for this book. Well, I am definitely going to read this on audio. Now that I have finished the whole book, I think that listening to it will clear up some of my confusion. I can't wait! I'm not ready to be done with this series.