Television personality Julie Chen uncovers a dramatic tale when she sets out for rural China to learn more about her maternal grandfather, who died long before she was born.

Singer Josh Groban traces his ancestry to Germany and discovers a relative who was a deacon, music teacher and well-known astronomer.

Actress Angie Harmon discovers an ancestor who gave up his freedom to come to America and fought for independence at a pivotal point in history.

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.

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.

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

Actor Bill Paxton searches his paternal ancestry and uncovers a war hero from a historic battle who shaped politics in the past.

Music artist Melissa Etheridge researches her French roots, discovering a scandalous lawsuit and a relationship entangled with tragedy.

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.

JK Rowling sets off on a journey to uncover her maternal French roots. She stumbles upon a family mystery, and uncovers a harrowing tale of wartime heroism, then discovers the actions of a brave ancestor.

Alfre Woodard investigates the paternal side of her family and explores the origins of her surname.

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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.

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.

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

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.

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.

Noah Wyle investigates his maternal family line, discovering an ancestor who was catapulted into one of America's biggest wars, and whose life spiraled out of control from remarkable success to a shocking and tragic end.

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.

Motown legend and icon, Smokey Robinson tracks down a grandfather tangled in a swirl of controversy and connects to a relative's familiar struggle with oppression while coming face to face with the gruesome history he knew was inevitable.

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 Liv Tyler unravels the mystery of her father Steven Tyler’s maternal family line, uncovering ancestors who took part in famous American battles. She also learns the shocking truths that will change the way she sees herself, and her family, forever.

Jon Cryer's journey takes him from America to Scotland as he uncovers the dramatic tale of an ancestor who survived a catastrophic battle, endured horrific conditions as a prisoner of war, and was forced to come to America as an indentured servant.

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.