“And you, monsieur,” said the countess to the chevalier Floriani, “what is your opinion?”

“Oh! I—I have no opinion, madame.”

All the guests protested; for the chevalier had just related in an entertaining manner various adventures in which he had participated with his father, a magistrate at Palermo, and which established his judgment and taste in such manners.

“I confess,” said he, “I have sometimes succeeded in unraveling mysteries that the cleverest detectives have renounced; yet I do not claim to be Sherlock Holmes. Moreover, I know very little about the affair of the Queen’s Necklace.”

Everybody now turned to the count, who was thus obliged, quite unwillingly, to narrate all the circumstances connected with the theft. The chevalier listened, reflected, asked a few questions, and said:

“It is very strange.... at first sight, the problem appears to be a very simple one.”

The count shrugged his shoulders. The others drew closer to the chevalier, who continued, in a dogmatic tone:

“As a general rule, in order to find the author of a crime or a theft, it is necessary to determine how that crime or theft was committed, or, at least, how it could have been committed. In the present case, nothing is more simple, because we are face to face, not with several theories, but with one positive fact, that is to say: the thief could only enter by the chamber door or the window of the cabinet. Now, a person cannot open a bolted door from the outside. Therefore, he must have entered through the window.”

“But it was closed and fastened, and we found it fastened afterward,” declared the count.

“In order to do that,” continued Floriani, without heeding the interruption, “he had simply to construct a bridge, a plank or a ladder, between the balcony of the kitchen and the ledge of the window, and as the jewel-case—-”