One of things I really enjoyed about this series is that every book feels like a very different story. The first was a coming of age, cross-country adventure, the second was a journey into the darkness of war and terrorism, this book felt more like an exploration of the vast differences between people and coming to terms with them. 
 I had mixed feelings towards Todd throughout this series, I loved him in the first book, I wasn't really sure how I felt about him in the second and in this one there were times where I actively disliked him. He was in an impossible position, and I credit Ness with keeping him a realistic character throughout. 
 For me Viola ended up as the hero of this series, which isn't bad for a character who didn't even get to narrate until the second book. 
 The third narrator introduced in this book shines a very different light on the series and was a welcome addition. Overall I enjoyed the series, though I still think the first book was my favourite, followed closely by the second and a little bit behind that is the third. I rate the third three stars because I enjoyed it but at times it felt a little long.