See Kim Cattral Discover Her Long-Lost Grandfather Was a Bigamist

On this emotional episode of Who Do You Think You Are, Kim Cattrall learns that her mothers absent father had a secret family only three hours away from their home in Liverpool, England.
A Sneak Peek at NBC's Star-Studded Reality Show: Who Do You Think You Are?
NBC's new new show will follow around celebrities as they discover their true family history. Sarah Jessica Parker, Matthew Broderick, Spike Lee, Brooke Shields, Emmit Smith, and Susan Sarandon will each star in their own episode. The trailer, inside.
