“We have, without interrupting him, allowed Daddy Jacques to recount to us roughly all he knows about the crime of The Yellow Room. We have reproduced it in his own words, only sparing the reader the continual lamentations with which he garnished his narrative. It is quite understood, Daddy Jacques, quite understood, that you are very fond of your masters; and you want them to know it, and never cease repeating it—especially since the discovery of your revolver. It is your right, and we see no harm in it. We should have liked to put some further questions to Daddy Jacques—Jacques—Louis Moustier—but the inquiry of the examining magistrate, which is being carried on at the château, makes it impossible for us to gain admission at the Glandier; and, as to the oak wood, it is guarded by a wide circle of policemen, who are jealously watching all traces that can lead to the pavilion, and that may perhaps lead to the discovery of the assassin. “We have also wished to question the concierges, but they are invisible. Finally, we have waited in a roadside inn, not far from the gate of the château, for the departure of Monsieur de Marquet, the magistrate of Corbeil. At half-past five we saw him and his clerk and, before he was able to enter his carriage, had an opportunity to ask him the following question:— “‘Can you, Monsieur de Marquet, give us any information as to this affair, without inconvenience to the course of your inquiry?’ “‘It is impossible for us to do it,’ replied Monsieur de Marquet. ‘I can only say that it is the strangest affair I have ever known. The more we think we know something, the further we are from knowing anything!’ “We asked Monsieur de Marquet to be good enough to explain his last words; and this is what he said,—the importance of which no one will fail to recognise:— “‘If nothing is added to the material facts so far established, I fear that the mystery which surrounds the abominable crime of which Mademoiselle Stangerson has been the victim will never be brought to light; but it is to be hoped, for the sake of our human reason, that the examination of the walls, and of the ceiling of The Yellow Room—an examination which I shall to-morrow intrust to the builder who constructed the pavilion four years ago—will afford us the proof that may not discourage us. For the problem is this: we know by what way the assassin gained admission,—he entered by the door and hid himself under the bed, awaiting Mademoiselle Stangerson. But how did he leave? How did he escape? If no trap, no secret door, no hiding-place, no opening of any sort is found; if the examination of the walls—even to the demolition of the pavilion—does not reveal any passage practicable—not only for a human being, but for any being whatsoever—if the ceiling shows no crack, if the floor hides no underground passage, one must really believe in the Devil, as Daddy Jacques says!’”