Not as phenomenal as the first one, but still equally amazing. I love how this book was pretty much based around figuring out truth and reasoning behind what happened in the first book. It had a lot of ups and downs and I will admit I didn't like the jumping from place to place to place to "hide" very much. Tris acted very...irrational in this one as well. I'm sorry but people look up to you. Grow up and learn how to hold a gun again with pride. 
 As for the ending I'm a bit confused still and it was a major cliff hanger. I'm interested in what the final book of this series will hold about the outside world and what's happening outside their walls.