Dan Stevens (35) plays "Matthew Crawley" who is "Lord Grantham's" legitimate heir in the series. He marries "Mary Crawley" in the second series, but his death at the end of the third series shocked fans. After his time on "Downton Abbey", Dan Stevens starred in "The Tomorrow People", "Inside Wikileaks" and "Night at the Museum: Secret of the Tomb". He played "The Beast/Prince Adam" in the 2017 hit "Beauty and the Beast".