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.

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.

Actor Matthew Morrison explores his American roots for the first time and is surprised to discover his family's ties to the Revolutionary War. He learns of the bold lengths his ancestor went through to protect his allegiances and the brutality he faced on the battlefield.

In memory of his late father, actor Chris O’Donnell investigates the paternal side of his family and finds ancestors on the frontlines of American history. Chris explores a patriotic legacy and a family devotion that extends deeper than he ever imagined.

Media mogul Chelsea Handler confronts a deep family secret: her Grandfather’s rumored Nazi past. As she dives into her family’s struggle to survive in a desperate time, the details uncovered will finally confirm or deny his affiliation to the dark regime.

Since her parents passed, country singer Trisha Yearwood knows little about her paternal side of the family. Her search for a deeper family connection takes Trisha to England, where she uncovers an ancestor’s history of crime, loss, and perseverance.

Actress Mandy Moore is shocked to discover ancestors who lived in Australia and travels far, determined to unlock the mystery of how they got there. Moore is touched by the courage of those who made the journey and the sacrifice of those who were left behind.

Actor Josh Duhamel travels to England to investigate the extraordinary life of his twelve times great-grandfather and uncovers an astonishing, dark twist of interrogation and torture that rocks his belief system to the core.

World famous supermodel Cindy Crawford takes a journey to discover her family origins. With travels to the UK and beyond, she discovers ancestors dating back to the English Civil War, and even finds a connection linking her to early European royalty!

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.

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.

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.

Emmitt Smith is an NFL Hall of Fame running back who, since retirement, has devoted himself to business and giving back to the community. But recently, he decided to embark on a journey inward, tracing his family's past. It was a journey that took him beyond his wildest expectations, discovering not only his African roots, but his connections to slave owners in Virginia.

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.

On his journey to learn more about his paternal roots, Matthew Broderick discovers the heroic story of his grandfather during World War I and finds the final resting place of his great-great-grandfather who fought in the Civil War.

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

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.

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.

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.