After 52 episodes, Smith was obviously tired and did not hesitate to express how glad she was for the end of the series on "The Graham Norton Show” where she stated, “[...] by the time we're through — she must've been 110. So, I couldn't go on and on and on. I couldn't. It just didn't make sense." She of course probably did not anticipate the two films that would follow, including "Downton Abbey: A New Era," which opened on May 20th.