Aisha Tyler learns about a brave ancestor and the story of a politician who tried to hide an illegitimate son.

Scott Foley finds a connection to the Salem witch trials in 17th-century Massachusetts, and learns about an ancestor who risked his life for a Founding Father.

Scott Foley finds a connection to the Salem witch trials in 17th-century Massachusetts, and learns about an ancestor who risked his life for a Founding Father.

Katey Sagal is surprised to learn about her Amish ancestry.

Katey Sagal is surprised to learn about her Amish ancestry.

Molly Ringwald investigates a family story that she has Swedish royalty in her blood.

Molly Ringwald investigates a family story that she has Swedish royalty in her blood.

Chris Noth discovers the suffering endured by his ancestors in America, and tracks a relative from Spain to Ireland who eventually became a war hero.

Chris Noth discovers the suffering endured by his ancestors in America, and tracks a relative from Spain to Ireland who eventually became a war hero.

Lea Michele digs into her Jewish roots and finds a heartbreaking story about her great-grandmother in addition to a family reunited after being separated for decades.

Lea Michele digs into her Jewish roots and finds a heartbreaking story about her great-grandmother in addition to a family reunited after being separated for decades.

Sex and the City actress Cynthia Nixon traces her ancestry, discovering that in 1843 her great-great-great grandmother murdered her abusive husband with an axe.

Sex and the City actress Cynthia Nixon traces her ancestry, discovering that in 1843 her great-great-great grandmother murdered her abusive husband with an axe.

Award-winning actor Jesse Tyler Ferguson (Ugly Betty and Modern Family) digs into his ancestry and follows the life of his great-grandfather.

Award-winning actor Jesse Tyler Ferguson (Ugly Betty and Modern Family) digs into his ancestry and follows the life of his great-grandfather.

Actress Rachel McAdams and her sister Kayleen trace their family past, discovering a privileged English ancestor forced to separate from those he loved.

Actress Rachel McAdams and her sister Kayleen trace their family past, discovering a privileged English ancestor forced to separate from those he loved.

Actress Valerie Bertinelli goes on the hunt to unlock her family's mysteries.

Actress Valerie Bertinelli goes on the hunt to unlock her family's mysteries.

Actor Kelsey Grammer traces his ancestry on his grandmother's side, uncovering the story of a woman haunted by demons.

Actor Kelsey Grammer traces his ancestry on his grandmother's side, uncovering the story of a woman haunted by demons.

Actor Bill Paxton reads captivating first-hand accounts of wartime battles and walks in the footsteps of ancestor, who fought in the American Revolution.

Actor Bill Paxton reads captivating first-hand accounts of wartime battles and walks in the footsteps of ancestor, who fought in the American Revolution.

Angie Harmon discovers an ancestor who gave up his freedom to come to America, fought for his country's independence, and risked everything at a pivotal point in history.

Angie Harmon discovers an ancestor who gave up his freedom to come to America, fought for his country's independence, and risked everything at a pivotal point in history.

Sean Hayes travels to Ireland to learn more about his estranged father's troubled past and uncovers a shocking trail of tragedy and crime that reaches back generations.

Sean Hayes travels to Ireland to learn more about his estranged father's troubled past and uncovers a shocking trail of tragedy and crime that reaches back generations.

America Ferrera brings the series to Honduras for the first time ever as she learns about the father she barely knew and discovers her family's role in Honduras history.

America Ferrera brings the series to Honduras for the first time ever as she learns about the father she barely knew and discovers her family's role in Honduras history.

Familiar with his paternal Hollywood lineage, Tony Goldwyn learns about his maternal great-great-great grandparents who pioneered women's rights and westward expansion.