An undated rare photo provided by Keya Morgan, found in a North Carolina attic, depicts two slave children, art historians say.  In April, the photo was found at a moving sale in Charlotte, accompanied by a document detailing the sale of John for $1,150 in 1854 (AP Photo/Courtesy of Keya Morgan, LincolnImages.com

Spike Lee is one of America's best-known film directors.  He has done more than anyone in his generation to bring African-American history and experience to the screen.  The name of his production company, 40 Acres and a Mule, refers to the broken promise made by the federal government to provide ex-slaves with land and a mule.  However, Spike does not know much about his mother's slave ancestry and in this journey he hopes to discover more about his slave roots and the people who owned his ancestors.

Emmitt Smith is an NFL Hall of Fame running back who, since retirement, has devoted himself to business and giving back to the community.  But recently, he decided to embark on a journey inward, tracing his family's past.  It was a journey that took him beyond his wildest expectations, discovering not only his African roots, but his connections to slave owners in Virginia.