A Whitbread Award-winning mystery about a young boy lost in Victorian London, pursued by bloodthirsty thieves, desperate to solve the mystery of the man his father wrongedWhat is the matter with old Mr. Jones? Endless footsteps and low groans can be heard from his room in the dead of night. Only his son William knows the a terrible secret: his father betrayed his business partner Mr. Diamond, and swindled him out of a great fortune. William resolves to go to London, find Mr. Diamond and make amends. But the murky big city, with its sinister characters and treacherous back streets, is no place for a boy of 12. And Mr. Diamond's own son is not the sort of person to forgive and forget. Danger and deceit lie waiting. Exclusive material in the back of the book teaches young readers more about the wonderful author and as well as how to have fun with some Cockney rhyming slang.