With only his immense knowledge of the Doylean canon-and the help of a beautiful young journalist-Harold embarks on a dangerous translatlantic investigation, making deductions worthy of his literary idol.
At the same time, author Graham Moore tells the story of Sir Arthur Conan Doyle himself, a story which his remained hidden in Conan Doyle's missing diary for a hundred years. In an attempt to prove himself the better of his most famous character, Conan Doyle hunts a serial killer through the streets of 1890's London. But what he finds is that in a world of real crime, and real evil, the world does not need Arthur Conan Doyle - the world needs Sherlock Holmes.