Another great book. 
 Previous books in this series seem a but younger but then so is Nick. He's young and while the story is being told from his perspective we are getting more of a kids view. Nick is quickly maturing after having to deal with demons and evil things out to get him and in the process the books are aging as well. 
 Kenyon has a way of bringing all these surprises to a book and in this one she didn't fail. We get surprises all over the place from Simi to Adarian. 
 The only part of this series I haven't enjoyed is Cherise. In the DH series Cherise is tough but seems like a loving mother. In Nick's series, Cherise seems to have very little faith in her own son. Nick is often in trouble for things that make little sense even taking into account she knows nothing of the supernatural world she's in the middle of. I do hope Cherise will grow with Nick. 
 There is, of course, some of the typical teen drama with a lot of supernatural mixed in but the message we always get is clear. Don't be a bully. Don't pick on other or use others who have less than you. 
 As for the ending. I hope that isn't the focus of the next book or I'm going to be so confused.