In the thirty-third installment of Donna Leon's magnificent series, Commissario Guido Brunetti confronts a present-day Venetian menace and the ghosts of a heroism that never was Around one AM on an early spring morning, two teenage gangs are arrested after clashing violently in one of Venice's squares. Commissario Claudia Griffoni, on duty that night, perhaps ill-advisedly walks the last of the boys home because his father, Dario...