I cannot believe Julie Kagawa turn to vampires next and the way she approached it is amazing. Love this author! 
 So, as the summary says this series is post-Apocalypse where a disease 'Red Lung' infected millions of humans and vampires (who were living among us, but hidden of course)Strong vamps are more or less immune to the virus that is they carry it and can transfer the disease to others they try to sire ( make vamp) unfortunately if the vamp is a weakling (without much power) they can instead turn you into a Rabid-basically a zombie. As a result of limited humans ( food supply for vamps) the vamps decide to take hold of cities and with selected humans live protected from the Rabid. Unfortunately, you have to be chosen and you have to donate blood for the vamps and if not you have to leave outside the the society in the outskirt of the community in poverty. 
 In this poverty lives Allison our young kick ass main character. Although, she is only 17 y.o she had a tough life living as a Unregistered( not registered with the vamps so no food or shelter for her)she does everything she can to survive, fight, steal and hunt for her own food. She has seen others kill each other and backstabbing is a way of life among the few humans that are Unregistered, her trust for others is almost nonexistent. She hates the vamps and how they treat the humans ( as animals/food) she wants to do something to stop the vamps for at the beginning she is only focus on survival. 
 Unfortunately for her, her life changes in quickly after a few chapters and everything she thinks she knows about the vamps is questioned specially when she meets a vamp called Kanin who does not live like the other vamps in the city instead he is also out in the outskirt of the community. 
 As the novel progresses we meet many other characters some that you will hate instantaneously and others you will love. I enjoyed this book and am very excited to read the next. Julie does not disappoint with her books.