I listened to this book and loved the author's writing style. A lot of people are comparing it to The Hunger Games, but it reminded me of Ender's Game, if Ender's Game were a romance. An unlikely hero goes through a series of tests and succeeds even though the odds are against her. It's very dark, but I loved the chemistry between Tris and Tobias. The only reason I didn't feel like giving it 5 stars was because the ending was more like a turning point that left you hanging rather than the end of the story.