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

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.