The season two premiere of Downton Abbey airs in the U.S. this weekend. The British costumed drama swept the Emmys last year and captured the imagination of the American public. The show tells the story of the Earl of Grantham and his family's scores of maidservants, butlers and valets. Sort of an Edwardian version of Dynasty... in tweed. Viv Groskop is the Downton Abbey correspondent for the Guardian newspaper. She joins us with some details about season two.