Donna Leon's "Commissario Guido Brunetti" mysteries have won legions of fans for their evocative portraits of Venetian life. In her novels, food, family, art, history, and local politics play as central a role as an unsolved crime. In "The Girl of His Dreams" when a friend of Brunetti's brother, a priest recently returned from years of missionary work, calls with a request, Brunetti suspects th...