'Downton Abbey': Rare Behind-the-Scenes Look

ABC's Nick Watt interviewing Elizabeth McGovern, who plays Cora, an American heiress who marries into English aristocracy and propped them up with their cash. She was the first character show creator Julian Fellowes developed. "There were far more of them than one might think. Something like 350 married into the English upper classes," Fellowes said. (ABC News)