I liked Perfect Ruin! It's a really interesting concept, a floating city about earth. It's definitely a world where the ground is forbidden, and it makes you wonder why they're floating above earth, why the ground is forbidden, and what's really going on in this society. 
 It was hard to get into at first, but by the end, I was really curious about the ground and the Princess and their technology and medicine. It was hard to get through at first, because I was really bored, but it does get more interesting as the book goes on. It is a shame, though, because some of the things that happen in the beginning had the potential to grab my attention, and it just didn't do that. 
 The concept of Jumpers was really weird at first, and it didn't make a lot of sense, but it does get explained throughout the book. Something I'm wondering, though, is how much sense the world is going to make by the end of the series. I did lose interest in her Chemical Garden trilogy by the time I got around to the last book, and there were things about that last book that didn't make sense. It makes me wonder if that's how this series will be, which makes me hesitant to keep reading, even though I really want to keep going. 
 Morgan fell really flat, as did a lot of the characters, and that might be why I had a hard time getting into it. They didn't really stand out, and Morgan didn't really have a personality, so it was hard to get completely invested in her story, and even when a certain event happened, it was hard to feel or care about how it affected Morgan. It's not good when I can remember more about the main character's brother and her best friend than the actual main character. At least they had some personality and depth to them. Maybe that will change in the following books, but in this one, Morgan made no impression on me whatsoever. 
 Still, I am interested in continuing the series at some point in the future, though I won't be picking up the second book anytime soon. 
 My Rating: 3 stars. I liked it, because I thought the floating city to be pretty different, and I feel like there's a really interesting world there. I'll definitely be picking up the next book at some point, even though it probably won't be soon.