<p>This Christmas, e-artnow presents to you the Christmas case for the world's most famous detective. As London prepares for Christmas, newspapers report the theft of the near-priceless gemstone, the "Blue Carbuncle", from the hotel suite of the Countess of Morcar. John Horner, a plumber and a previously convicted felon, is soon arrested for the theft. Sherlock Holmes and his assistant Watson set out across the city to determine how the jewel tra...