If you've read the previous books in the Iron Fey series, you need to read this book. If you haven't, I'll be blunt and say that this probably won't be the best book to start off with. Since this is the start of a new arc within the series there is a little going back over of back story to where you might not be completely lost, but you'll definitely feel like you missed out on a huge chunk of story. This means that you won't enjoy it as much otherwise. 
 I have to say that I'm glad that the story changed narrators. I liked Meghan and she was a likable heroine, but I'll admit that I was getting a little tired of her at times and I wanted to see a fresh angle for this story from another mortal's eyes. I know that Iron Knight was Ash's story, but I wasn't as happy with that as I wanted to be. We're given new characters, new situations, and best of all: new fae. Ethan is a moody and sometimes bullheadedly stubborn character. You won't know whether you want to smack him upside the head or agree with him. He's a jerk to a good many people, but for pretty good reason. Ethan hasn't had it easy since his sister took off to be the Iron Queen. (Although neither has she, I'd wager.) 
 Kenzie, his potential love interest in the book is nice, although at times Kagawa is a little overly obvious that she has A Hidden Secret about her that will eventually be revealed. No worries though, as it actually explains a lot about some of the character's drive throughout the novel, even though I was expecting it to be slightly different. Also given a fair amount of time to shine is a new character, Kierran. Readers will be able to guess at his part in the story and why he's associating with Ethan somewhat easily, but the point of this is less to surprise the reader and more to set up the plot for the next book. (I can't say much without spoiling this, but there's been forshadowing about this previously in the series.) 
 I'll admit that occasionally there were some things in here that kept it from being absolutely perfect. Every once in a while I got a little impatient because things seemed to take a little longer than I'd like and sometimes the characters just seemed a little overly quick to jump to one thing or another. Despite her later reveals, Kenzie just seemed to jump to certain choices a little quickly, although I'm sure that this will probably be a plot point further in the series. This isn't really any big failing on Kagawa's part, mind you. This is the type of thing that I feel is completely subjective to the reader in this case. 
 Overall this book is pretty freaking nifty. It's a marked improvement over Iron Knight and I found it really, really hard to put this book down once I started reading it. If not for the demands of work and non-book life, I'd probably have devoured this in one sitting. This is an absolute must read for anyone who loved the earlier books in the series. It just stinks that now we have so long to wait until the next book in the series comes out. (Although on a positive note, 2013 will have us receiving book 2 in both this new arc as well as in Kagawa's Blood of Eden series. So the wait will be rewarded greatly.) 
 4 out of 5 stars 
 (ARC provided by Netgalley)