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Watch This Tonight: Who Do You Think You Are?

Cynthia Nixon is uncovering a family mystery on TLC's Who Do You Think You Are? On the season premiere, the former Sex and the City star searches for answers about her paternal ancestry and finds a family in torment. The truth soon becomes stranger than fiction when a history of deceit -- and even murder -- slowly reveals itself. Find out more about the episode and why it's our pick for Wednesday's Watch This Tonight:

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Cynthia Nixon is uncovering a family mystery on TLC's Who Do You Think You Are?

On the season premiere, the former Sex and the City star searches for answers about her paternal ancestry and finds a family in torment. The truth soon becomes stranger than fiction when a history of deceit -- and even murder -- slowly reveals itself.

Find out more about the episode and why it's our pick for Wednesday's Watch This Tonight:

Who Do You Think You Are? airs Wednesdays at 9/8c on TLC.