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Unfortunately, this book didn't live up to it's predecessors. Roth seemed to lose focus as she went along. Too many plots that were not needed,too many conspiracies. She also chose to write from two different perspectives, Tobias and Tris; but there were no narrative differences between the two. I had to keep going back to check whose perspective I was reading from. I do give Roth credit for making a big choice regarding her lead (no spoilers) that many other ya authors would never make. I wish she had streamlined the story more, and continued to make it about Tris. It felt under-developed in many places and over-developed in others. Sadly, a disappointing end to what could have been a great trilogy.