Who Do You Think You Are? (US) Show Summary, Upcoming Episodes and TV Guide

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.

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.

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

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.

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.

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

Megan Mullally explores a shocking pattern of dysfunction in her father's line; she finds her two-times great grandmother was bravely defying societal norms in order to fight for her family's survival, while struggling to hang on to her own sanity.

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.

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.

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

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.

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 that her ancestor is one of Europe's most famous characters.

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.

Katey Sagal has an emotional and insightful meeting with her mother's friend and fellow USO performer. Katey also finds a surprising link to the Amish and uncovers the harrowing story of her relative's daring escape from attackers.

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.

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.

Alfre Woodard goes on a journey searching for her grandfather's roots, and finds a relative who endured one of the most horrifying periods in American history, but accomplished an extraordinary feat.

Actress Ginnifer Goodwin searches her family history in hopes of connecting her father with the grandparents he never knew; she is shocked to uncover lives filled with drug addiction and life-altering consequences.

Actor/Director Bill Paxton researches his paternal lineage, uncovering the captivating life of an ancestor who was a war hero in a historic battle and who shaped politics and society during a turbulent era.

Beyond a family of Hollywood Legends, actor/director Tony Goldwyn explores his maternal lineage. He is introduced to a heritage of political activism; a couple ahead of their time proudly fighting for abolition, women's rights and westward expansion.

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

Julie Chen never knew her maternal grandfather; he died long before Julie was born. All she had heard was that he was a wealthy playboy with a rags-to-riches story. Julie sets out for rural China to learn more about his life and uncovers a dramatic tale.