Maggie Smith, who won an Oscar for 1969 film “The Prime of Miss Jean Brodie” and won new fans in the 21st century as the dowager Countess of Grantham in “Downton Abbey” and Professor Minerva McGonagall in the Harry Potter films, has died at 89.

The original principal cast of “Downton Abbey” are returning for a second film that will arrive in theaters December 22 this year.