ET sat down with Leech and Dockery to talk everything 'Downton Abbey,' which hits theaters on Sept. 20.
More from Entertainment Tonight: https://www.youtube.com/channel/UCdtXPiqI2cLorKaPrfpKc4g?sub_confirmation=1
Exclusives from #ETonline :
https://www.youtube.com/playlist?list=PLQwITQ__CeH2Y_7g2xeiNDa0vQsROQQgv