This book was entertaining. I stayed up way too late over the last few nights to read it. It's quickly paced with a ton of action, and I was pulled into the plot right away.

While I liked the action, the majority of the book was action and not much else. The characters spent most of the story training for battle, and then they got to put their skills to the test at the end of the book. The pulse-pounding action scenes will keep you reading, but the number of action scenes doesn't leave much room for character development. You can only learn so much about the characters by watching them fight. It took me a really long time to get a sense of Tris's personality. Four is an intriguing character and has a lot of potential, but I don't feel like I know enough about him to care about his relationship with Tris. Most of the other characters seemed like cardboard cutouts who were created just to die. I didn't feel anything for them when they died because I didn't feel like I knew them.

There are similarities between this book and The Hunger Games, especially in the beginning. I didn't like this book as much as I liked The Hunger Games, but I'm still looking forward to reading the next one. I have to know what happens.