The protagonist and narrator, Christopher John Francis Boone, is a kid with Special Needs. I'm not sure how he'd be classified--he seems to have what are considered behavioural problems, and can't handle the stress of change well but that could be said about a lot of people. Christopher is intelligent, methodical, analytical and precise. It's amazing to me that such precision and detailed a narration manages to remain utterly engaging. In any case, he finds his neighbor's dog murdered and decides to go figure out whodunnit. In the process, he tests the limits of his bravery and his capacity to handle change and ends up a total hero in ways he may never understand. I absolutely loved this book.