The little-known story of William Still, known as the Father of the Underground Railroad. William Still's parents escaped slavery but had to leave two of their children behind, a tragedy that haunted the family. As a young man, William went to work for the Pennsylvania Anti-Slavery Society, where he raised money, planned rescues, and helped freedom seekers who had traveled north. And then one day, a strangely familiar man came into William's office, searching for information about his long-lost family. Could it be? Motivated by his own family's experience, William began collecting the stories of thousands of other freedom seekers. As a result, he was able to reunite other families and build a remarkable source of information, including encounters with Harriet Tubman, Henry "Box" Brown, and William and Ellen Craft.