I just finished reading the book and I'm still in awe. To be honest, every page you turn makes it hard to breath. It's like you're already anticipating something bad along the way that you can't relax and be cool about it. Like Tris, it makes you suspicious. Roth has her ways of making us anticipate the next book without leaving us deathly cliffhangers and that's something I love about her style in writing.
The book shows us how Tris was slowly eaten by guilt over what happened during the night of the attack and how this, along with grief affects her radical thinking.
I love how we explored more characters personality and met new ones. I liked how Roth introduced them to us by giving us small info and not only focus on the antagonist and protagonists that usually happens when the book is having its moment; a very interesting part of the storyline. I love how the storyline is not purely focused on one thing and goes on a straight line. It definitely branches out along the way.
Though romance was obviously not it's focus, I was glad with the amount of Four/Tris moments. Although I sort of hated Tris for her lies and whatnot. There were issues between them and Tobias and it's sad to see them working behind their backs, even though it's for the same cause.
It surprised me how deaths, even of supporting characters affected me by making me connect to what Tris felt and how slowly these became factors of her decision making.
Over all, I loved the book. I loved the twist not just with the storyline but also with the characters. But I admit, this seems like a filler for an epic ending. I really wish it's epic.
Now, here comes the hard part: waiting for the next book.