I should have quit after book one. The series had an interesting premise if you didn't look too closely, but by the third it completely falls apart. I kind of like the idea of the third book - even if it had the same secret twist - if it had been built up in a different way. But it just doesn't make sense within the parameters of the world Roth has already built. Instead, it feels like her attempt to ret-con some of the things that don't make sense with the first book (like why everyone's personalities fall so neatly into the different factions). I feel like I just got too caught up in the YA dystopian crazed and wasted my time with this series.