Alex Kingston to join cast of Upstairs Downstairs.
Alex Kingston (better known to whovians as River Song) has been reported to be joining the cast of the series "Upstairs Downstairs" - a revival of the classic TV show from the early 1970's.
Digital Spy reports that the role she will be playing is Blanche Mottershead - a younger sister of Lady Holland in the new series.
The original series focused on the Bellamy family and their help, while the new series focuses on the Holland Family - and of course their help.
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