To be honest.... it was interesting. Not that much but I really liked the writing style. This is the review I made for my English Proffessor: 
 Overview 
 First person tale of Christopher, a fifteen-year-old with Asperger's Syndrome or high-functioning autism, and a talent for Math, who writes a book about his investigations of the murder of a neighbour's dog. He loves Sherlock Holmes and is amazingly observant of tiny details, but his lack of insight into other people's emotional lives hampers his investigation. Nevertheless, he has to overcome some of his deepest habits and fears, and he also uncovers some unexpected secrets. 
 It is primarily a YA book, but there is more than enough to it to make it a worthwhile adult read as well. 
 Prime Chapters and Structural Quirks 
 The structure of the book and narrative style reflect Christopher's mindset and way of viewing life. It is peppered with snippets of Maths and explanations of his condition: how it affects him, and what coping strategies he adopts. The effect is plausibly stilted and occasionally breathless, which is reminiscent of people I know who are on the autistic spectrum and tallies with my limited reading about the condition. 
 Honest but Unreliable Narrator? 
 Christopher's condition makes him very literal - something he is aware of. He can analyze a joke, but still not "get" it. He hates situations where he can't tell the truth and indeed the fact that "everything you tell is a white lie" because you can never give a fully comprehensive answer to anything. He also hates metaphors (even "the word metaphor is a metaphor", meaning "carrying something from one place to another"), but he doesn't mind similes because they are not untrue. 
 Many novels are about uncovering what is true, but Christopher's quest takes the idea to a deeper level, and even though we know this narrator is almost pathologically truthful, his condition means his observations sometimes miss the real truth of a situation. 
 There is plenty of humour, and it usually arises from Christopher's naive misunderstandings of situations and the conflict between his lack of embarrassment and desire to be unnoticed by unfamiliar people. 
 Logic and Truth 
 Christopher loves Maths because it is safe, straightforward and has a definite answer, unlike life. He's also good at explaining some aspects, ending an explanation of calculating primes with "Prime numbers are what is left when you have taken all the patterns away". 
 He is a little like his hero Sherlock Holmes, who is quoted saying: "The world is full of obvious things which nobody by any chance observes".