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Years go by, and Sherlock Holmes is certainly not getting any younger. He is gradually retiring, and Watson now reminisces more about his previous investigations than about new ones. In 1927, the last stories about the great detective were published in a separate collection called The Cases of Sherlock Holmes. Today, readers all over the world recognise Conan Doyle's literary hero as a man of "great heart, great stature, great soul", as the writer himself was. Every fifth Briton believes that Sherlock Holmes is a real person, and thousands of letters are still sent to 221-6 Baker Street every year.