When Commissario Brunetti investigates the murder of two local fishermen on the island of Pellestrina, the small community closes ranks, forcing him to accept Signorina Elettra's offer to visit her relatives there to search for clues. Though loyal to his beloved wife, Paola, he must admit that less-than-platonic emotions underlie his concern for his boss's beautiful secretary.
Found this at a little street library in Mitcham and then discovered I already have a copy.

Release #15 for 2020 ...