UNTO US A SON IS GIVEN, by Donna Leon
Over the years, Donna Leon has given the world a marvelus series of murders set in Venice, Italy, and its surrounding area. Brunetti, the police inspector, is a deeply-drawn character, as is his wife Paola and their two children, Rafi and Ciara. Brunetti's colleagues run the range from brilliant to seriously challenged, but all are handled by the inspector with care and respect. In each book, Leon has managed to bring Brunetti to new realizations and new insights. The reader gets to enjoy the ride, too.
Venice, of course, plays an important part in the tales, as does the Italian system of justice and - in this particular story - the Italian inheritance laws. In Italy, your relations get your estate. None of this cat shelter givewaway decisions.
When Brunetti's father-in-law, Count Falier, asks him to check out a young man the Count's oldest friend plans to adopt, Guido is uneasy. It's a family matter. He knows the man, an accomplished art dealer with a large fortune. A homosexual, the older man has found a new companion after his partner of many years left him. If the young man a fortune hunter? Does it matter? Once he's adopted, the entire estate of the elderly art dealer devolves to the young man.
It not only matters to the art dealer, it matters to his long-time friends. Including a delightful woman who shows up in Venice. Brunetti meets her, is impressed. And then...
Read the book. It's one of Leon's better books, multi-layered and thought-provoking.