It is June, 1897, the eve of the greatest celebration in the history of London--the Diamond Jubilee of Her Royal Highness Victoria, Queen of the United Kingdom and Empress of India. At 221B Baker Street, happy anticipation of the event is shattered when an alarmed Samuel Clemens bursts in and informs Holmes and Watson that his life is threatened by a bizarre international conspiracy. Holmes, Watson, and Clemens spend the frantic final days before...