a evening. a game. the verdict. adaptation of Friedrich Durrenmatt text, it is a fascinating gem. for impressive performance , for the mixture of genres, for the making of scenes, for the chain of surprises, for debates and the art of Ettore Scolla to use original source. a parable and a special gem because , more than a movie, it is exploration of deep shadows of viewer past. remarkable is the science to not reduct the charm of film at admirable cast. to use the castle details as lead character and construct the unexpected events in a impeccable manner. a film who must see it . the cast is only the bait. the film is the real splendid labyrinth who makes many questions more than joy of a good show. because it is a precise embroidery of old pieces and a beautiful game of appearances.