Probably my favourite book of 2013 so far. Just amazing! It was fun, exciting, with tremendous world building. I mean, it actually had its own subject which I ended up learning through the helpful drawings before every chapter and before long I was lecturing my husband on it! Loved the friendship/banter between Joel and Melody. It also ended pretty chillingly. I NEED THE NEXT BOOK NOW. Full review to come, probably with more caps.