DOWNTON ABBEY Teaser Trailer Check out the new DOWNTON ABBEY teaser trailer! The film, directed by Michael Engler, stars Maggie Smith, Michelle Dockery, Elizabeth McGovern, Allen Leech, Phyllis Logan, Imelda Staunton, Robert James-Collier, Stephen Campbell Moore, Hugh Bonneville,Laura Carmichael, and Tuppence Middleton. DOWNTON ABBEY will be released in theaters on September 20. Plot unknown. Movie based on the popular British television show, Downton Abbey (2010).