In which Mr Sherlock Holmes and Dr Watson engage in Royal Intrigue, and in which our narrator promptly forgets his forswearing of British Accents, acquitting himself "Passably," yet manages a German accent "Most Atrociously," or "Perhaps Russian?"
Sidney Paget's illustrations are not quite as well-known anymore as John Tenniel's ones for Alice, but they still helped create the visual image of Holmes that continues to this day: