Billie Jean King, Derek Jeter and Rebecca Lobo learn about their family histories. King discovers that her grandmother was an orphan; Derek Jeter investigates his ancestors' lives as slaves; and Lobo finds out that an ancestor was forced to flee Spain because of his democratic ideals.

Chef Tom Colicchio learns the hardships his family endured in Northern Italy; chef Ming Tsai traces his roots back 2,000 years; chef Aarón Sánchez learns his Mexican roots include Spaniards, Africans and Native Americans.

Nas learns about his slave ancestors; Angela Bassett discovers that her family history includes an emancipation story; and Valerie Jarrett, a senior adviser to President Obama, learns about the free people of color in her family's past

Tony Kushner learns how the Holocaust impacted his ancestors; Carole King delves into the origins of her family name; and Alan Dershowitz discovers that an Hassidic synagogue started by his great-grandfather played a secret role in World War II.

Deepak Chopra, Sally Field and Sting’s ancestry demonstrates the extraordinary influence of the British Empire during the 18th and early 19th century.

Tina Fey, George Stephanopoulos and David Sedaris, three quintessential voices in American life, descend from ancestors that were part of the wave of Greek immigrants that flooded America’s shores in the early decades of the 20th century.

Secrets encoded in their genomes challenge these guests’ ideas about their families’ histories and their identities today. This episode features Jessica Alba, Anderson Cooper, Valerie Jarrett, Governor Deval Patrick and more.

Discover the unsolved mysteries behind the family stories of political organizer Donna Brazile, actor Ty Burrell and artist Kara Walker as they learn how the legacy of slavery has shaped their identities.

Explore the shared Irish ancestry of three powerful social commentators of our times, Bill Maher, Soledad O'Brien, and Bill O'Reilly.

Learn how the ancestors of Maya Rudolph, Shonda Rhimes and Keenen Ivory Wayans struggled for freedom, and how each of these cultural trailblazers gain a new understanding of how they fit into this proud trajectory.

Uncover a history of tragedies and triumphs in the families of three of America’s funniest men–Jimmy Kimmel, Norman Lear and Bill Hader—as they learn how comedy truly has its place in all aspects of life.

Discover how the ancestors of business mogul Richard Branson and architects Maya Lin and Frank Gehry took audacious risks to create opportunities, and how their luck, ingenuity and chutzpah was passed on to these three visionaries.

Patricia Arquette, Senator John McCain, and Julianne Moore explore their genealogical heritage with Henry Louis Gates, Jr.

Uncover family mysteries about two legends of hip hop, Sean Combs and LL Cool J, through the use of DNA technology, which reveals information that shakes their very foundations.

Discover how Neil Patrick Harris, Gloria Steinem and Sandra Cisneros are connected to pioneers who broke new ground and paved the way for their modern day descendants to continue shaping our culture.

Discover how actress Julianna Margulies, author Azar Nafisi and chef Lidia Bastianich are bound together by their ancestors’ singular and deeply human desire to preserve their most cherished traditions.

Learn how Dustin Hoffman and Mia Farrow, who last shared the screen together in 1969, also share a history of tragic deaths in their families that played major roles in shaping future generations.

Henry Louis Gates, Jr. helps actor Andy Samberg and author George R. R. Martin answer some family mysteries when DNA detective work uncovers new branches of their family trees. The DNA analysis upends family history and reveals new relatives.

Henry Louis Gates, Jr. helps actors Felicity Huffman and Michael K. Williams discover a wealth of hidden family history. Both grew up knowing little about their biological fathers, and seeing their lost ancestry restored proves deeply empowering.

Henry Louis Gates, Jr. shows journalists Christiane Amanpour, Ann Curry and Lisa Ling that the stories within their own family trees are every bit as compelling as the news stories they have been covering for the world.

Henry Louis Gates, Jr. explores with Marisa Tomei, Sheryl Sandberg and Kal Penn the tremendous challenges faced by their immigrant forebears. From Italy, Russia and India to America, their histories show success could take generations to achieve.

Henry Louis Gates, Jr. delves deep into the roots of two African-American guests, actor S. Epatha Merkerson and athlete and television personality Michael Strahan. Both discover unexpected stories that challenge assumptions about black history.

Henry Louis Gates, Jr. explores the diverse family histories of politicians Paul Ryan, Tulsi Gabbard and Marco Rubio. They each see a shared vision of the great American melting pot reflected in their ancestors’ stories.

Henry Louis Gates, Jr. shows comedians Seth Meyers, Tig Notaro and Sarah Silverman that their family trees are filled with people whose struggles laid the groundwork for their success. Gates also reveals to each one news of an unexpected DNA cousin.

Henry Louis Gates, Jr. explores the family stories of filmmaker Michael Moore and actors Laura Linney and Chloë Sevigny—three people whose distant ancestors overcame great hardships in ways that resonate with their lives today.