'Lots of things are mysteries. But that doesn't mean there isn't an answer to them' 

Christopher does not like strangers or the colours yellow or brown or being touched. On the other hand, he knows all the countries in the world and their capital cities and every prime number up to 7507. When Christopher decides to find out who killed the neighbour's dog, his mystery story becomes more complicated than he could have ever predicted.

BACKSTORY: Meet the author and learn about the background to Christopher's story.