An unusual Commissario Guido Brunetti mystery which spends 90% of the book on his existential angst, otherwise known as burnout as he is beginning to feel the weight of the corruption, greed, and evil in the world of his work.  He ends up taking a 2 week leave of absence on an island in the Laguna where he reconnects by chance with an old friend of his father’s from rowing.  They row and talk for a week before Davide is found drowned next to the Cemetery where he visits his late wife.  Brunetti, feeling that all is not as it seems, digs into the past and finds a sordid tale of environmental pollution and its impact on people.  A cerebral and unconventional Leon and a good read.