It's not that this book was bad, it just wasn't very good. The author has set up an interesting world, though the descriptions of it as a new X-Men kind of gives away the truth of the thing that you typically wouldn't realize until the end of the book. The romance is the driving force of the book, and is certainly where Mafi shines. The semi-stream-of-consciousness style really lended itself well to those scenes. There is a good sense of suspense throughout and some decent action/chase scenes, but that's about it. I would describe this as Twilight written as a dystopian. 
 The main character, Juliette, I found extremely whiny and annoying. She's definitely a Bella, damsel in distress, relying on the love interest for protection, who is also flat and irrationally in love with her from the start. She is terrified of her own ability to the point that she is borderline crazy in the beginning. While this could have been interesting, it comes off more irritating. But I must say, by the end of the book, she was starting to come into her own, so it's possible that in a sequel I might like her more. 
 Adam, the hero, has very little development of his own other than his relationship with his little brother. Mostly he just fawns over Juliette through the entire book and generally looks amazing. Much like Bella and Edward, he seems to be the only person immune to her powers, and that fact in an of itself is the basis for the relationship. Overall an extremely normal and average teen hero. 
 Warner, the villain, is probably the best character in the book. He's well-developed, interesting, and unpredictable. He's the kind of guy you love to hate, usually. But with heroes who largely just annoyed me, I ended up just wanting Warner to win. 
 I might read the sequel, but without seeing more of the characters I wouldn't recommend this one.