When an old man sees an unidentified Civil War photograph of a woman in the newspaper, he begins a desperate search for a 160-year-old painting that he believes will match the image of the enigmatic woman in the photograph, and if it does, it will prove that his great, great grandfather did not run from battle. After the old man hires Sean O'Brien to find the mysterious painting, O'Brien discovers it's linked to a secret letter and map that will lead...