Maggie Smith, scene-stealing actor famed for Harry Potter and 'Downton Abbey,' dies at 89

Maggie Smith, the masterful, scene-stealing actor who won an Oscar for 1969 film “The Prime of Miss Jean Brodie” and gained new fans in the 21st century as the dowager Countess of Grantham in “ Downton Abbey” and Professor Minerva McGonagall in the Harry Potter films, died Friday. She was 89.