On her 16th birthday, protagonist Tris joins a Fight-Club-for-teens-esque faction called "Dauntless" and fights, stabs, wrestles, shoots, and abstains from sexytimes for the next 40 chapters in this dystopian cousin of "The Hunger Games." 
 I didn't love this book, but I found the premise of the 5-factioned world to be interesting. It certainly has some thinly-veiled parallels to today's society, such as one group of people "mind-controlling" another group of people in order to do the first group's bidding, so that they don't have to get their hands dirty. 
 Ultimately though, the writing and plot could not deliver on the promise of the premise. I felt as though everything was so repetitious. Certain key words and phrases were used over and over--sometimes within the same paragraph or chapter, and I found it distracting. If I hear the word "abnegation" or "I am dauntless" one more time I might jump into the pit. Also, I think anyone could see any of the impending plot "twists" a mile away. 
 Unless it is a book club pick, I don't see myself reading the sequel. Nor do I have any interest in seeing the movie, which has already cast Shailene Woodley (from the movie "The Descendants" and the TV Show "The Secret Life of the American Teenager") as Tris.