Singer Kelly Clarkson explores her lineage and uncovers an ancestor deeply rooted in American history; she comes face-to-face with her 3x great grandfather's wartime bravery and sacrifice.

In the Season 7 premiere, Ginnifer Goodwin hopes to connect her father with the grandparents he never knew, and uncovers a dark side of her family tree that includes instability and drug addiction.

Brooke learns a tragic secret about her grandmother and then discovers a connection to royalty through her paternal roots.

The country music superstar uncovers his father's heritage among the Founding Fathers.

Actress Rashida Jones learns about her family history on her mother's side.

Sarah Jessica Parker is a celebrated icon in film and television as well as fashion, who recently served as a producer and reprised her Emmy Award-winning role as Carrie Bradshaw for the screen adaptation of the hit HBO series "Sex and the City." The actress took an emotional journey from coast to coast in search of her family's roots, crossing paths with the California Gold Rush and the Salem Witch Trials.

Lisa Kudrow journeys to the small Jewish town of Ilya where she discovers how her great-grandmother died in the Holocaust. Yet, Lisa finds hope when she uncovers a 60-year old family mystery.

Vanessa Williams sets out on a journey to find out if her ancestors were also trailblazers.

Actor Blair Underwood utilizes a DNA test to dig deeper into his family's roots, where he discovers the secret of his family's origin.

Country music star Reba McEntire heads to Raleigh, North Carolina as she explores her mother's ancestry.

Actress Rita Wilson travels to Greece and Bulgaria to learn more about her late father.

America Ferrera learns about her great-grandfather's pivotal role in Honduran history, and seeks a connection to the father she hardly knew.

Courteney Cox traces her maternal line back to ambitious and ruthless relatives who plotted and murdered their way to power in medieval times; and she's shocked to discover an ancestor who's one of European history's most famous characters

Actress Hilary Duff uncovers the tale of an ancestor who bravely led an American colony to battle a notorious gang of pirates; she dives centuries-deep into her Scottish roots and is shocked to discover that she descends from a heroic medieval king.

Actress Molly Shannon heads to Ireland in search of her mother’s unknown family tree. She finds desperate ancestors forced to choose between their faith and survival; uncovers a family legacy of bravery; and meets Irish cousins for the first time.

Kim Cattrall travels to her native England to discover what happened to her grandfather, who abandoned his family to poverty when Kim's mother was only eight years old.

Steve Buscemi seeks a compelling story on his mother's side of the family, and finds it in his great-great-grandfather Ralph B. Montgomery.

Actor Rob Lowe examines his family history.

Actor Jason Sudeikis heads to Chicago to research the life and death of his paternal grandfather and makes a discovery about his great great grandfather in Pennsylvania.

Valerie Bertinelli goes on the hunt to unlock her family’s mysteries. She tracks down courageous ancestors who suffered through hardship and tragedy, and discovers a royal lineage dating back centuries that she never dreamed possible.

Minnie Driver unravels the deep family secrets her late father kept hidden. She discovers how the ravages of war nearly destroyed him, tracks down a long lost relative for the first time, and forms an unlikely bond with an ancestor she never knew existed.

Actor John Stamos explores his Greek heritage for the first time and discovers an explosive feud that shattered his grandfather's childhood. He also meets a relative he never knew and hears firsthand about his family's enduring strength.

Actress Marisa Tomei travels to Italy to uncover the truth about her great-granddather's death.

Actress Christina Applegate investigates her paternal grandmother - a stranger to her and her father. Uncovering dramatic details along the way, Christina gains insight into the life and hardships of the woman she and her father loved, but never knew.

Actress Zooey Deschanel searches for rumored abolitionists in her father’s Ouaker family background. Her journey takes her around Pennsylvania where she uncovers, and follows, the story of a remarkable ancestor who sacrificed everything for her beliefs.