Narrative style and structure of the story

The story is written out of Christopher view, the main character created by the author Mark Haddon. That makes us really see what he thinks and feels as we get the information directly from him. Also it helps us to understand the Asperger´s Disorder because Christopher writes and explains thing as he sees them. His aim with the book is to create a murder mystery novel which one of the staff members at his school, Siobhan recommended him. As Christopher really like prime numbers, because they are easy to understand and simple, all the chapters are numbered with prime numbers (so it starts with chapter 2 then 3, 5, ... ).
The content of the chapters stagger between his story about the dead dog and his feelings and things that bother him.