The Curious Incident of the Dog in the Nighttime 2

As Christopher continues to write us his murder mystery, he digs deeper into the strange scenario. He discovers letters his "dead" mother has been writing to him for years. Apparently, his father had been hiding the letters. He told Christopher that his mother died because they got a divorce due to his mother falling in love with their next door neighbor. After discovering this, his father tells him that he was the one who killed the dog. This terrifies Christopher, and for some reason he thinks he may be next. It's very strange to see the way that he thinks and acts, simply because I don't know what it's like to be autistic. A perfect example is his use of only prime numbers. Christopher is forming into an extraordinarily interesting character.