For decades, Nick Burns has been haunted by a decision he made as a young soldier in World War I, when a French artist he'd befriended thrust both her paintings and her baby into his hands--and disappeared. In 1974, with only months left to live, Nick enlists Jenny, a college dropout desperate for adventure, to help him unravel the mystery. The journey leads them from Paris galleries and provincial towns to a surprising place: the Museum of Tears,...