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

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

The search for her mother's roots takes Rosie to Ireland, and uncovers a new branch of the family.

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.

Lionel Richie sets out to unlock the mystery of the man his beloved grandmother never spoke about - her father, John Louis Brown.

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.

Gwyneth Paltrow's exploration of both sides of her family shows her the importance of teaching her kids that where they come from is important.

Actress Ashley Judd discovers a connection to the first American settlers while investigating her ancestral past.

Television personality Tom Bergeron researches his paternal roots in France and discovers his nine-times great grandmother, Marguerite, who endured upheaval and faced going against her Protestant upbringing in order to survive.

Aisha Tyler's journey reveals an ancestor who, as a politician, struggled to keep his illegitimate son a secret. Against all odds, her 2x great-grandfather exemplifies bravery and determination during one of America's most tumultuous eras of racism.

Jennifer Grey discovers much more about the grandfather she thought she knew as she uncovers how he survived adversity to become a beacon of his community; and discovers a great-grandmother whose devastating tragedy stopped her from making it to America.

Jessica Biel hunts for the truth behind family lore surrounding the death of an ancestor. She also makes two shocking discoveries that shake everything she knows about her heritage to the core.

Susan leads an emotionally charged search for her family roots. Starting with her estranged grandmother Anita who abandoned Susan's mother in early childhood, Susan's journey takes her all the way to Tuscany, Italy. Back in America, Susan discovers a surprising connection to her grandmother.

In tribute to his late father, actor Jim Parsons explores the ancestors on his paternal side of the family. The journey takes Jim to Louisiana and eventually France, where he discovers generations of his forefathers who made an indelible mark in history.

Bryan Cranston's happy childhood shattered when his father abandoned the family when Bryan was just 11. Seeking answers, Bryan explores his paternal roots, finds a troubling pattern of desertion, a man of honor and an aunt he never even knew existed.

Actress and activist Laverne Cox pieces together the inspiring life of her African American ancestor, who challenged societal norms and bravely pushed the boundaries just years after Emancipation.

Actress Regina King investigates her maternal family tree and uncovers an ancestor who was a passionate civil rights activist in Alabama; a man who came out of slavery, endured horrific violence, but never stopped fighting for his people.

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Chef Paula Deen investigates her family history and learns about an event that affected her ancestors during the Civil War.

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Kelsey Grammer takes a trip into the past to explore his beloved grandmother’s family. He uncovers the story of a woman haunted by demons, and finds a connection to family who risked everything in one of the greatest migrations in American history.

Spike begins his journey in Atlanta, Georgia, where his grandmother Zimmie worked in the segregated Southern systems for many years. Here, Spike follows the trail of his ancestors dating back to the Civil War and discovers a shocking family connection.

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.

Julie Bowen makes a shocking discovery that a beloved relative lead a nefarious organization that triggered a dark chapter of U.S. history; and uncovers another ancestor who risked everything to fight for the lives and freedom of African Americans.

Actor Tony Goldwyn researches his maternal ancestry and discovers a heritage of political activism along with a couple who proudly fought for abolition, women's rights and westward expansion.