First off. I was simply astounded that I ended up liking this book. 
 I was ambilivent in chapter one, but by the end of chapter two I was hooked. Still, I was wary. Penryn was only driving the plot because her sister had been kidnapped. It seemed to me that was unrealistic motivation, considering the setting of the novel, that Penryn would expect to be able to persue and get her sister back. I did not hold out hope that she was going to find her alive - or find her at all. I feared an unresolved ending. 
 However, I was pleasantly surprised. A semi-resolution does happen. It was not unrealistic. I was appeased on that score. 
 I still have questions: (view spoiler)[ What was up with the scorpion-things in the tanks and why was Raffe unsurprised by them? What is the purpose of the scorpion-things? What was up with all the medical experimentation on the children? Why was Penryn's sister diffrent from any of the others? What does Penryn's mom really know? I had assumed she was not crazy by the end of the book. How was Penryn's mom able to stay ahead of/keep up with her daughter while traveling? If Gabriel was the messenger, the only angel that God spoke with, how do we know that "God" even told Gabriel to advance on man? - Maybe Gabriel was just bored. I could totally understand Raffe's agnostic view and respected that he wasn't totally certain if God was really out there. I wish I understood more about what was going on with Raffe's sword at the end. Was it really just the bat wings? Because I don't think so. (hide spoiler)] 
 I loved loved loved that there were no clear lines, from a human point-of-view, of good and evil. In this world, Angels are attacking, demons are attacking, and neither of them wish humanity well. 
 I was sad and disappointed that more questions were raised in this novel than are answered. I'm giving it 5 stars because I hope that all of my questions will be answered in the next installment (I hear it will be a 5 part series). 
 Susan Ee has won over my curiousity. I want to know where she's going to take this story next. The pressure is on. It better be good, because my expectations are very high. 
 Recommended. 
 (view spoiler)[ Also, I kind of had a squicky moment when Raffe and Penryn kissed. All I kept thinking was: He's HOW old.. and she's.. 17??? I have a feeling though, that forbidden "romance" lies in that direction. I can only hope that it doesn't turn into an agnsty way for Raffe to torture himself internally. *rolls eyes* (hide spoiler)]