The calculation was just, seeing that, more than two centuries later, M. Beautrelet fell into the trap. And this, Sir, is what I was leading up to in writing this letter. If Lupin, under the name of Anfredi, rented from M. Valméras the Château de l’Aiguille on the bank of the Creuse; if, admitting the success of the inevitable investigations of M. Beautrelet, he lodged his two prisoners there, it was because he admitted the success of the inevitable researches made by M. Beautrelet and because, with the object of obtaining the peace for which he had asked, he laid for M. Beautrelet precisely what we may call the historic trap of Louis XIV.
And hence we come to this undeniable conclusion, that he, Lupin, by his unaided lights, without possessing any other facts than those which we possess, managed by means of the witchcraft of a really extraordinary genius, to decipher the undecipherable document; and that he, Lupin, the last heir of the Kings of France, knows the royal mystery of the Hollow Needle!
Here ended the letter. But, for some minutes, from the passage that referred to the Château de l’Aiguille onward, it was not Beautrelet’s but another voice that read it aloud. Realizing his defeat, crushed under the weight of his humiliation, Isidore had dropped the newspaper and sunk into his chair, with his face buried in his hands.
Panting, shaken with excitement by this incredible story, the crowd had come gradually nearer and was now pressing round.
With a thrill of anguish, they waited for the words which he would say in reply, the objections which he would raise.
He did not stir.
Valméras gently uncrossed his hands and raised his head.
Isidore Beautrelet was weeping.
CHAPTER SEVEN
THE TREATISE OF THE NEEDLE
It is four o’clock in the morning. Isidore has not returned to the Lycée Janson. He has no intention of returning before the end of the war of extermination which he has declared against Lupin. This much he swore to himself under his breath, while his friends drove off with him, all faint and bruised, in a cab.