Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

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

Uncover family mysteries about two legends of hip hop, Sean Combs and LL Cool J, through the use of DNA technology that 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.

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

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

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

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

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

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Henry Louis Gates, Jr. explores the humble roots of comedic actors Melissa McCarthy and Eric Stonestreet, retracing the ancestral journeys that laid the groundwork for their success.

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

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

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Actors Fred Armisen and Christopher Walken and musician Carly Simon each learn about a grandparent whose real identity and background had been a mystery to them -- redefining how they see themselves.

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Bryant Gumbel, Tonya Lewis-Lee and Suzanne Malveaux discover a tapestry of the unexpected in their ancestry, revealing slaves and free people of color, Civil War legacies and forgotten European origins. (Part 6 of 10)

Host 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.

Host 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.