Get a first look at Smokey Robinson’s journey of exploring his family history.

Katey Sagal learns more about her family tree and how her Amish ancestors arrived in Pennsylvania.

Smokey Robinson continues to learn about the surprising path of his maternal grandfather.

Josh Groban studies a record book of his eight times great-grandfather's academic career and has fun making a few assumptions about the man's character and style.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Get a first look as actor John Stamos digs into his family history.

Actress Angie Harmon begins a personal journey to unlock the mysteries of her ancestors.

Actor John Stamos meets with modern Greek historian Katerina Lagos where he learns that his paternal grandfather is listed as an orphan at only age 13.

Molly Ringwald explores family lore of Swedish royalty, which uncovers her ancestors' harrowing lives and reveals women who suffered through unspeakable tragedies, and one brave immigrant who forever changed her family's fate.

Angie learns that her ancestor Michael Harmon reported to one of George Washington's toughest generals. That said, Michael's promotion to corporal was a pretty big deal!

Actor John Stamos discovers his paternal great-grandfather was murdered in a village in Greece.

Chris Noth tracks down family torn apart by a devastating disaster when he follows his relative's trail from Spain to Ireland and finds a man who endured oppression, but rose up to fight in one of the fiercest battles of all time to become a war hero.

Consulting a record of Michael's will and a book about the Harmon family, Angie learns that her ancestor was a clear-headed man who valued justice. She becomes emotional when she discovers his stance on slavery.

Chris Noth finds an ancestor who endured oppression, but rose up to fight in one of the fiercest battles of all time to become a war hero.

Actor/Producer Sean Hayes searches for the cause of his estranged father's troubled past and uncovers a shocking trail of tragedy and crime that reaches back generations.