Sooooo, yeah, ending trilogies in a way that makes everyone happy must be a really hard endeavor for authors. I've yet to read one that I thought was great; although, the Across The Universe trilogy came really close to great. This book felt like a lot of filler, so many characters to keep track of, and so much talk of the different serums I became confused. If you're a Divergent fan, you gotta finish it out - no question. It was super cool to be visiting home at the time I was reading it and riding the El, going to Millennium Park, and certainly O'Hare, where much of the book takes place. But overall, I was sad and disappointed by this book.