'Who Do You Think You Are': Minnie Driver explores her secret family

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On the Season 5 finale of "Who Do You Think You Are," actress Minnie Driver dives into the secret world of her late father, Ronnie.

Take a look at a special sneak peek clip from Driver's journey above, in which the actress explains finding out the earth-shattering news her father had a secret family, while he was in a relationship with her mother and because of that, she was never able to get to know her grandparents.

The actress also reveals having son Henry, now 5 years old, made her want to connect with who she really was.

Take a look at Driver's emotional journey above and see it all play out on "Who Do You Think You Are" Wednesday, Aug. 27 at 9:00 p.m. ET/PT on TLC.
Photo/Video credit: Getty Images, TLC