2,5/5. Two words! Plot hole! Big one. This book start so well with a very intriguing premises and then a good start (the first 100 pages were pretty good). And then you start to see it going nowhere... at all. Still I wanted to know how it will end so I kept on going and going quite fast because the writing, while being very simple, is very fluid and fast paced. But at the end you realize that even if it's was fast pace, it could have easily been cut in half, because the same thing happen and are repeat over and over again without it being necessary it all, because it's quite easy to follow, anyway... So I kept going and then the end happen and it was a very bad ending, two many things unanswered, things that are answered but don't make any sense. So good and bad, but more bad then good, and not really worth it. To resume it briefly, a strong idea, strong start, and then it's like the author didn't think all through before writing and fit it all in something to make it work more or less, not a very good execution. Disappointed... I had high hope even if too many people have says that I shouldn't read it, I didn't listen, I should have!