In 1854 Mississippi, honest riverboat card gambler Mark Fallon wins young Laurent Dureau's diamond necklace, a family heirloom which, in the end, will bring him happiness and tragedy alike.In 1854 Mississippi, honest riverboat card gambler Mark Fallon wins young Laurent Dureau's diamond necklace, a family heirloom which, in the end, will bring him happiness and tragedy alike.In 1854 Mississippi, honest riverboat card gambler Mark Fallon wins young Laurent Dureau's diamond necklace, a family heirloom which, in the end, will bring him happiness and tragedy alike.