This is another...where have you been books? Or, where were you when this came out? Okay, this is just my kind of book folks. Great fast moving story with a lovable cast, a lot of action, and throw in a love interest. I am there! So, where was I huh? I don't know why it took me so long to read it, but I am definitely kicking myself...I love Four and Tris...the whole time I am thinking Michael and Nikita. I am a sucker for the "trainee" plots in books. This one is pretty graphic at times; I mean a pencil to the eye. Yowsa. My favorite parts were Tris's arrival at the training complex. The parts where Tris makes discovories about Four's past. My favorite line was when Tris says something about Peter wanting to throw a party if Tris stopped breathing, and Four replies that he would only go if there was cake!Solid 5 stars for me.