Fifteen-year-old Christopher has a photographic memory. He understands maths. He understands science. What he can't understand are other human beings. When he finds his neighbour's dog lying dead on the lawn, he decides to track down the killer and write a murder mystery about it. But what other mysteries will he end up uncovering?
- Whitbread Book of the Year.
- Booktrust Teenage Fiction Award.
- Guardian Children's Fiction Prize.