One day Arthur Conan Doyle will create the greatest detective of all - Sherlock Holmes. But right now, Artie Conan Doyle is a twelve-year-old Edinburgh schoolboy with a mystery of his own to solve. Artie and his best friend Ham are investigating the strange case of the Scarlet Phantom, a jewel thief who seems to walk through walls and disappear at will. But there's a rival detective on the case, a paranormal investigator who claims that...