With Harriet Tubman as her guide, Cassie retraces the steps escaping slaves took on the Underground Railroad in order to reunite with her younger brother.

As he did in his highly acclaimed George Washington, Spymaster, author Thomas B. Allen digs back through historical records to present a famous historical figure in a new light. Readers discover that Harriet Tubman--well-known to them as an ex-slave who led hundreds of her people to freedom along the Underground Railroad--was also a spy for the Union Army. More specifically she worked behind Confederate lines in South Carolina getting information...