Ok. So first of all, When I picked up this book the first thing I thought was "What's up with the deer?" The cover made me confused until I actually read the book, at which point I was like, "Oh. THAATs whats up with the deer!" 
 So this book pretty much continues with all the drama of the first book, plus one very sexy creep, and TADA! you have shadowspell. 
 Um, there was some freaky stuff involving the Erlking. So he wants to go on a killing spree with his wild hunt, and he need Dana in order to do so. Then he does some stuff to Ethan, and Dana makes one bargain with the Erlking. This bargain includes her virginity... 
 So, I really just want to talk about the Erlking for a second. His actions seem pretty genuine to me, and it seems like he sort of cares about Dana even, and also, He just seems very sexy. But that didn't really stop him from thoroughly creeping me out. I mean...I kept picturing him as someone older, and it was freaking me out. Especially with their little bargain. But I was also thinking when she made that bargain "Do you really think that's all he wants?! I mean come on, you keep saying so yourself that you're really not all that great, and you didn't think to even ask him what the heck he REALLY wants?" And that was my major problem with this book. 
 Ok, then there was Ethan. I mentioned in my review of the first book that Ethan and Dana give me a very Mortal instruments: Jace and Clary vibe. This book made it even more like that, because I kept thinking "It's kinda like city of fallen angels! Ethan is acting like Jace!" But anyway, I like Ethan, but he and Dana didn't really fit in my opinion. Don't ask why, because I don't know.... 
 So overall, the book was good. It was just....different, from any other books I've read....