VIDEO: First Look - DOWNTON ABBEY Releases Season 4 Trailer!

Check out the new trailer for Downton Abbey series 4, which will debut this fall on ITV and returns to PBS in the US in January. Watch it below!

According to ITV's official synopsis of the season, "Downton Abbey series four finds Lady Mary mourning her husband Matthew, who died six months earlier in a tragic car crash. Matthew had just visited his wife and new baby George in hospital and was returning to see his family when his car overturned killing the heir to Downton. Will Mary find happiness again in the new series of Downton Abbey which will be back on our screen in the autumn."