Maggie Smith's Post-Downton World

Dame Maggie Smith is a critically-acclaimed and award-winning actress best known for her roles from "Harry Potter" to Masterpiece Classic’s "Downton Abbey." Although the Grantham family and the doors of Downton have closed for the last time, we sit down with Maggie Smith's biographer, author Michael Coveney, to see what a post-Downton world holds for Smith.