This publicity image released by PBS shows Hugh Bonneville as Lord Grantham, left, and Jim Carter as Mr. Carson from the popular series "Downton Abbey." The third season premiere airs in the U.S. on Sunday, Jan. 6, 2013 on PBS. (AP Photo/PBS, Josh Barratt)

Photo by: Joss Barratt

This publicity image released by PBS shows Hugh Bonneville as Lord Grantham, left, and Jim Carter as Mr. Carson from the popular series "Downton Abbey." The third season premiere airs in the U.S. on Sunday, Jan. 6, 2013 on PBS. (AP Photo/PBS, Josh Barratt)