Episode Four presents fascinating discoveries about participants' lineages thanks to DNA analysis.
Episode Three reveals stories of participants' ancestors during the early years of the United States.
Episode Two continues to trace the guests' lineages back through the late 1800s to the Civil War.
Episode One focuses on stories of the participants' ancestors from the early 20th century.
Henry Louis Gates, Jr. returns as series host to guide notable African Americans on a search for their ancestry.
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