I am FLYING through this series. I probably won't remember much minus the major plot points in a few months because I'm reading it so fast.... 
 Don't read the below review unless you've read Book #1 Angelfall. 
 Penryn was carried out of the pits of hell (view spoiler)[okay not really just a basement filled with creepy scorpions and bad angels (hide spoiler)] by Raffe back to her family and the resistance. While in the aerie she discovered her sister had been experimented on and has a whole new hunger to deal with. Eventually once they all return to the resistance Paige's hunger is exposed and all hell lets loose. Paige runs off into the woods and goes missing again. Mom goes crazy (not that she wasn't already) and starts blaming everything on Pen. 
 "It is painful to see that people prefer a bad guy who looks like an angel to a good guy who looks like a demon." 
 We learn in this book where those crazy Scorpions come from and why they were created (view spoiler)[they're humans turned experiments by the angels and are supposed to be a sign of the coming apocalypse (hide spoiler)]. The political (Uriel) makes the mistake of presenting this information at the wrong time and chaos breaks loose.