Augustus Cain is a damaged man haunted by a terrible skill: the ability to track people who don't want to be found. Rosetta is a runaway slave who bears the scars, inside and out, of a life of servitude to a cruel and unforgiving master. Her flight is fueled by a passion and determination only a mother could feel, and she would rather die than let anyone drag her back to hell. In a dark, volatile time prior to the Civil War, fate has bound the hunted and hunter on a remarkable odyssey from Virginia to Boston and back again--an extraordinary test of character and will, mercy and compassion, that will change them both forever.