The first letter did not appear out of thin air. First there was a dilapidated inflatable doll and its elderly owner, ready to send all the sinners of Vigata to the next world. Nosy journalists. Loud report. Awakened madness. And then - a chain of strange letters. How do you like this riddle, Commissioner Montalbano? Do you think this is just a game, an intellectual duel and a prize at the end? Beware of the promised treasure - it will be your reward.