Sign of the Four

HarperCollins is proud to present its incredible range of best-loved, essential classics.‘I abhor the dull routine of existence. I crave for mental exaltation. That is why I have chosen my own particular profession, or rather created it, for I am the only one in the world…’In London, 1888, the razor-sharp detective skills of Sherlock Holmes are to be put to the test. Mary Morstan reports two seemi...