Image: Downton Abbey, Season 4
Nick Briggs / Carnival Film and Television
Image: Joanne Froggatt as Anna, and Nigel Harman as Green.
Nick Briggs / Carnival Film & Television

'Downton Abbey' role leaves Maggie Smith a nervous 'lump of jelly'

She may be known as the snarky, determined matriarch on "Downton Abbey," but Maggie Smith, the veteran actress behind the oh-so-quotable...