The curious incident of the dog in the night-time

Before I forget, I want to write a little about this book. I finished reading in 3 days. It had been sitting on my bookshelf for like more than 3 years. It's by a 15 year old boy. Well no the author is an adult (I think). The boy, Christopher, has a behavior problem but has a perfect memory. He remembers everything he saw and heard. So, he likes to describe all the things in detail so the story is a bit slow. Still, it had a good twist when he started doing detective work for who killed the neighbors dog. He was asking all the neighbors and when he was talking to an old lady, she told him what he didn't know. His mother died a long time ago but according to the lady, turned out to be alive and living in London (He lives in Swindon). He discovers letters from his mum in his dad's bedroom. He was in such a shock that he couldn't move and his father came home and found him there. His dad told him the truth. It was he who killed the dog and mum is still alive living with the neighbor's husband in London. Christopher decides to run away to his mum's house because he thinks his dad is no longer safe to live with for he told a lie. He eventually gets to London (with a lot of trouble) but was taken back after a few days by his mum.

Hmmm.... Guess I'm not very good at describing...