I liked so much about this, and parts really hit my narrative kinks - a 'treasure' hunt with clues, poetry, copyright traps, abandoned places! I'm getting a touch bored with high school caste war, but at least in this book the parts that emphasised that were over quickly.With the riotous road trip the book regained the momentum that it had had during the very first part. Then it finished at what was, for me, an appropriate place - satisfying, without being overly predictable or neat. This book would definitely be pushing five stars for me, except that I kept getting jarred out of it with "lame"s and "retard"s. (A recurring experience in YA, unfortunately.) With the rest of the writing having such clarity and flow and impetus, this kept shattering my absorption. But it's still a 3.As an aside: I keep having an experience recently where I'm keen to hear the story from another character's voice, and I think a companion book from Margo's POV could be amazing. Break down the Enigmatic Object of Affection stereotype.