Brigitte Nicholson becomes hooked after she discovers a mystery in their family's past: how did a Dakota Sioux princess end up buried in Brittany as a noblewoman alongside a distant relative? Brigitte's quest to learn the story of the Marquise de Margerac (née Wachiwi) takes her from Salt Lake City to Sioux Falls, S.D., and eventually to Paris, where she meets Marc Henri, a fetching Sorbonne literature professor.