This is one my fav distopian novels by far. The idea of this book is very orignal and fascinated me from the moment i heard about it. The characters are realistic with depth and Alex and Lena's relationship was fun to read about. The way it develops and its pace is perfect. There is a lot of suspense in this novel, because everytime they are together, it makes you wonder if they are gonna get caught. The other characters were cool too. The ending was utterly heartbreaking :'( and i'm hoping the sequel will fix that.