It's a great book. I chose it because it is about a dog on the cover and I love dogs. In fact, dogs are not the main characters in this book, but it speaks well of them. The narrator is an autistic teenager. He recounts his investigation into the death of Wellington, the dog of a neighbor murdered suddenly fork and explains what it's like his life and what is happening in his head. Christopher (the narrator) explains clearly and simply the logic of his actions, the thinking that motivates them, while, seen from the outside, by people called "normal", they are incoherent and incomprehensible. After reading this book, one discovers a narrator who, under outside "stupid", has a sharp intelligence. But her brain stores absolutely all data from the outside world without making a selection, so sometimes he "plant", like a computer that has overloaded tasks. Behaviors like growling in public, people barking in the street, rolling on the ground screaming in a store or hit people if they try to hug you or touch you become logical and easily understood from reading this book. Although the volume is thick, it is still quite easy and quick to read for young readers (I would say from 11 to 12 years) because it is very airy and there are many images. These, especially the plans and diagrams, are also not mere illustrations, but are produced by the narrator to clarify his remarks. In short, reading this book is a real experience and one feels less ignorant after that.