If you're looking for a realistic dystopian this book is not for you. Now, I know what you're thinking, realistic dystopian? Oxymoron right? Allow me to explain. All the key components for a typical dystopian are here: oppressive government, an uprising, post-apocalyptic society, etc. The unrealistic part: Kira is 16 and has a crazy insane amount of medical knowledge. I know that it's not uncommon in dystopian novels for people to know/do things out of the ordinary but this is way out there and requires you to suspend belief, even more so than a typical dystopian. 
 There was a pretty good plot twist that I didn't see coming. In fact, my mind was going in a completely different direction. It was a good plot twist but it leads to a lot of questions, none of which we get answers for of course. 
 I really liked Kira. The crazy insane amount of medical knowledge Kira knew didn't bother me, though I wish it would have been a bit clearer as to how she learned it all. She was pretty down to earth and was all about saving her friend's baby and the human race even though her decisions didn't always seem to be popular. 
 I liked most of the secondary characters, especially Marcus. Kira and Marcus are in a relationship and he's protective of her and it's really cute. Even their little arguments are cute. Madison was important to the story but didn't have much of an active role. Xochi was really cool, and I really liked Jayden, especially his attitude and willingness to do whatever needs to be done. I didn't really care for Haru. He was an ass. 
 I found the Partials to be fascinating. How could they not be? They are genetically engineered, look just like humans but have immense strength. (Even though the Partials look just like humans, I couldn't help but picture them like the robots in I Robot.) You learn quite a bit about the history of the Partials but not nearly enough of the present. 
 The concept of RM was a bit confusing. RM is the virus that is killing all the newborns and was used by the Partials to wipe out most of the world's population. The survivors of RM are all living in Manhattan and are immune to the virus. As Kira is working on finding the cure there is a lot of science terminology used and since science really isn't my thing it left me a little confused. 
 It started a bit slow but then it really picked up and it was hard to put down. I really enjoyed his writing style, it was descriptive without going overboard.