So I am actually going to take a cop-out here, and refer you over to my friend, Zuleeza, who said my feelings for this book perfectly. You can read her review HERE. 
 But if you want my specific thoughts, hang around! 
 This book is a common, cliche angel novel. The concept behind it is great, people thinking Rayna is crazy because she sees angels? However, this interesting concept is also part of the novel's downfall. The therapy she goes through seems a little..much. A bit overdone and unrealistic. Plus, if I was seeing something I sure as heck shouldn't be seeing, I'd keep my trap shut about it. 
 Anyway, things are just kind of settling down for Rayna, the therapy is working, and she hasn't seen an angel in awhile. Lo and behold, she walks in to her class and an angel is STANDING RIGHT THERE. In her class. Hey, doesn't this sound familiar? 
 Yeah, thought so. Plus it's all a little too much of a coincidence. Can anyone guess what happens next? Guess. No, really, guess. Because you probably have no chance of getting it wrong. She's drawn to mysterious boy, and of course it's mutual, although we won't ever understand why. What follows is just kind of fluff. 
 So that's my two cents. A predictable story with a semi-interesting mystery. I recommend it for fans of FALLEN, and HUSH, HUSH. If you hadn't guessed, I will not be continuing this series.