Acclaimed archeologist and historian Karolyn Smardz Frost painstakingly resurrects Thornton and Lucie Blackburn's perilous 1830s journey from Kentucky slavery to Canadian freedom. "Exhaustively researched and poignantly told," this compelling story "pulsates with the breathtaking urgency of a thriller" (Boston Globe). ". [an] engrossing look at a couple who defied slavery."-Booklist, starred review