HarperCollins is proud to present its new range of best-loved, essential classics.There's the scarlet thread of murder running through the colourless skein of life, and our duty is to unravel itAfter a harrowing tour in Afghanistan, Dr. Watson returns to London to convalesce at 221B Baker Street, home to the enigmatic Sherlock Holmes. Their lives are irrevocably thrown together by news that a man has been found dead in a grimy ‘ill-omened’ house, with the word rache – German for revenge –...