“All that would have been a very doubtful and almost absurd hypothesis, as Larsan admitted to me, but for another and much graver circumstance. In the first place here is something which I have not been able to explain—Monsieur Darzac had himself, on the 24th, gone to the Post Office to ask for the letter which Mademoiselle had called for and received on the previous evening. The description of the man who made application tallies in every respect with the appearance of Monsieur Darzac, who, in answer to the questions put to him by the examining magistrate, denies that he went to the Post Office. Now even admitting that the letter was written by him—which I do not believe—he knew that Mademoiselle Stangerson had received it, since he had seen it in her hands in the garden at the Élysée. It could not have been he, then, who had gone to the Post Office, the day after the 24th, to ask for a letter which he knew was no longer there. “To me it appears clear that somebody, strongly resembling him, stole Mademoiselle Stangerson’s reticule and in that letter, had demanded of her something which she had not sent him. He must have been surprised at the failure of his demand, hence his application at the Post Office, to learn whether his letter had been delivered to the person to whom it had been addressed. Finding that it had been claimed, he had become furious. What had he demanded? Nobody but Mademoiselle Stangerson knows. Then, on the day following, it is reported that she had been murdered during the night, and, the next day, I discovered that the Professor had, at the same time, been robbed by means of the key referred to in the poste restante letter. It would seem, then, that the man who went to the Post Office to inquire for the letter must have been the murderer. All these arguments Larsan applies as against Monsieur Darzac. You may be sure that the examining magistrate, Larsan, and myself, have done our best to get from the Post Office precise details relative to the singular personage who applied there on the 24th of October. But nothing has been learned. We don’t know where he came from—or where he went. Beyond the description which makes him resemble Monsieur Darzac, we know nothing. “I have announced in the leading journals that a handsome reward will be given to a driver of any public conveyance who drove a fare to No. 40, Post Office, about ten o’clock on the morning of the 24th of October. Information to be addressed to ‘M. R.,’ at the office of the ‘Epoque’; but no answer has resulted. The man may have walked; but, as he was most likely in a hurry, there was a chance that he might have gone in a cab. Who, I keep asking myself night and day, is the man who so strongly resembles Monsieur Robert Darzac, and who is also known to have bought the cane which has fallen into Larsan’s hands.