A simple bit of land clearing for a garden in rural Italy turns up some bones, and among the bones is a signet ring of the Lorenzonis. That signet means that a long-lost heir has been found, and it is up to Commissario Brunetti to tease out what actually happened to the heir of the Lorenzonis, and why.
Donna Leon is an excellent writer; her characters are complicated and her plotting is intricate. There were several times when the reader thought they knew what had happened, only to have the plot take a sharp turn. Another lovely aspect of the series is the way Leon writes about Italy, the atmosphere of the city and the people. A noble radiance is available in e-book format, from eLibraries Manitoba.