Mysterious night murder of a dog, Haddon M.

Fifteen -year -old Christopher Boon is an autistic. He is a talented mathematician and a very smart guy, only his tenacious memory and a living mind do not help him in life at all. So far, one day, to be precise, at seven minutes of the first night, he is not found in the backyard of the neighbors. A disfigured dog lies nearby. Now Christopher is a suspect! Whether the boy will be able to conduct an investigation and prove to others that he has nothing to do with the death of a defenseless animal. Or has?