Who Do You Think You Are?

Actor, singer, writer, and director Billy Porter enlists the help of a family historian and genealogist to learn the truth behind the 1923 murder of his great-grandfather. Billy's research takes him through conflicting accounts of what happened before he discovers a local African-American newspaper that lays bare the appalling truth of his grandfather's death and the community uproar that followed.

Stage, film, and television actor Nick Offerman traces his family tree, uncovering ties to the Revolutionary War and the story of his 8x great-grandparents, who ran a successful tavern in 1700s New York. As his search deepens, Nick is dismayed to find the unfortunate truth of how his ancestors handled their relationship with the Mohawk nation as they struggled to keep their tavern on hotly contested land.

Award-winning stage, film, and television actress Allison Janney traces her maternal family tree and uncovers a remarkable story that ties her to some of America's first British settlers. She discovers that her 10x great-grandmother, and her 11x great-grandfather, were born in England but died in Massachusetts in the mid-1600s. As she seeks details about their lives, she learns that the family's journey to North America almost ended in tragedy.

Actor Zachary Levi's journey into his family's past unearths a story of trauma that has been passed down through generations. He learns of a heartbreaking tale involving his 2x great-grandparents and of his 10x great-grandmother's life being in jeopardy as she's accused of witchcraft. Knowing that he wants to start a family of his own, Zac is on a mission to understand his past in order to break the chain of his family's intergenerational trauma.

Actor and political activist Bradley Whitford meets with a genealogist to learn about his grandmother's heritage, discovering why his ancestors immigrated to the United States in 1846. His journey takes him to Washington, D.C., where he learns that his 2x great-grandfather, along with his siblings, fought in the Civil War. Bradley partners with a historian to learn if his ancestors survived the brutal warfare.

Actor Zachary Quinto travels to Italy and the Midwest and discovers the story of his great-grandfather, who held a political career in Pittsburgh. Zachary discovers his great-grandfather rose to prominence during a labor dispute at the turn of the last century and is stunned when he discovers a "cosmic" connection to his relative - his use of a phrase that would become synonymous with one of Zachary's screen roles.