Very curious indeed. This was kind of odd. I had heard such great things about it and I read it in a day, but it was just strange.
Story about a 15 year old boy who is autistic and decides to write a book after finding his neighbor's dog impaled with a rake in her front yard. He finds out secrets about his parents split up and about other people. The book is told from his point of view. You will be reading about what happened and then the next chapter, which are only in prime numbers because the boy likes prime numbers, will be about how he solves a particular math equation. Very odd.