Millions of people have watched Maggie Smith on "Downton Abbey." But she's not one of them. The 78-year-old actress, who portrays Lady Grantham in the popular PBS series, told "60 Minutes" that she hasn't watched the drama.
The third season of "Downton Abbey" ends this Sunday with a bang. Exactly what that bang is, we're not going to say, in deference to the maybe half-dozen "Downton" fans who still don't know the shocking truth.