What troubles Downton Abbey? Find out more on Sunday at 8 pm By Rena Garrett • Jan 22, 2014 ShareTwitter Facebook Google+ Email Lady Rose meets the Prince of Wales and faces a dilemma. Trouble also plagues Cora’s mother, her brother, Edith and almost everyone else at Downton Abbey. "Downton Abbey IV, Pt. 8" on Masterpiece Classic airs on Sunday, February 23rd at 8:00 p.m.