“Well, well, we have made a beginning. I should not expect any fresh developments until next Tuesday. In the meantime we can only keep in touch with friend Bennett and enjoy the amenities of this charming town.”

In the morning Mr. Bennett slipped round to bring us the latest report. As Holmes had imagined, times had not been easy with him. Without exactly accusing him of being responsible for our presence, the professor had been very rough and rude in his speech, and evidently felt some strong grievance. This morning he was quite himself again, however, and had delivered his usual brilliant lecture to a crowded class. “Apart from his queer fits,” said Bennett, “he has actually more energy and vitality than I can ever remember, nor was his brain ever clearer. But it’s not he — it’s never the man whom we have known.”

“I don’t think you have anything to fear now for a week at least,” Holmes answered. “I am a busy man, and Dr. Watson has his patients to attend to. Let us agree that we meet here at this hour next Tuesday, and I shall be surprised if before we leave you again we are not able to explain, even if we cannot perhaps put an end to, your troubles. Meanwhile, keep us posted in what occurs.”

I saw nothing of my friend for the next few days, but on the following Monday evening I had a short note asking asking me to meet him next day at the train. From what he told me as we travelled up to Camford all was well, the peace of the professor’s house had been unruffled, and his own conduct perfectly normal. This also was the report which was given us by Mr. Bennett himself when he called upon us that evening at our old quarters in the Chequers. “He heard from his London correspondent to-day. There was a letter and there was a small packet, each with the cross under the stamp which warned me not to touch them. There has been nothing else.”

“That may prove quite enough,” said Holmes grimly. “Now, Mr. Bennett, we shall, I think, come to some conclusion tonight. If my deductions are correct we should have an opportunity of bringing matters to a head. In order to do so it is necessary to hold the professor under observation. I would suggest, therefore, that you remain awake and on the lookout. Should you hear him pass your door, do not interrupt him, but follow him as discreetly as you can. Dr. Watson and I will not be far off. By the way, where is the key of that little box of which you spoke?”

“Upon his watch-chain.”

“I fancy our researches must lie in that direction. At the worst the lock should not be very formidable. Have you any other able-bodied man on the premises?”

“There is the coachman, Macphail.”

“Where does he sleep?”

“Over the stables.”

“We might possibly want him. Well, we can do no more until we see how things develop, Good-bye — but I expect that we shall see you before morning.”

It was nearly midnight before we took our station among some bushes immediately opposite the hall door of the professor. It was a fine night, but chilly, and we were glad of our warm overcoats. There was a breeze, and clouds were scudding across the sky, obscuring from time to time the half-moon. It would have been a dismal vigil were it not for the expectation and excitement which carried us along, and the assurance of my comrade that we had probably reached the end of the strange sequence of events which had engaged our attention.

"Shall I tell you what is happening, monsieur le secretaire-general? Well, you too are having your head turned by all this business Now that you possess the list, your state of mind has suddenly sunk to that of a Daubrecq or a d'Albufex. There is no longer even a question, in your thoughts, of taking it to your superiors, so that this ferment of disgrace and discord may be ended. No, no; a sodden temptation has seized upon you and intoxicated you; and, losing your head, you say to yourself, 'It is here, in my pocket. With its aid, I am omnipotent. It means wealth, absolute, unbounded power. Why not benefit by it? Why not let Gi1hert and Clarisse Mergy die? Why not lock up that idiot of a Lupin? Why not seize this unparalleled piece of fortune by the forelock?"'

He bent toward Prasville and, very softly, in a friendly and confidential tone, said:

"Don't do that, my dear sir, don't do it."

"And why not?"

"It is not to your interest, believe me."

"Really!"

"No. Or, if you absolutely insist on doing it, have the kindness first to consult the twenty-seven names on the list of which you have just robbed me and reflect, for a moment, on the name of the third person on it."

"Oh? And what is the name of that third person?"

"It is the name of a friend of yours."

"What friend?

"Stanislas Vorenglade, the ex-deputy."

"And then?" said Prasville, who seemed to be losing some of his self-confidence.

"Then? Ask yourself if an inquiry, however summary, would not end by discovering, behind that Stanislas Vorenglade, the name of one who shared certain little profits with him."

"And whose name is?"

"Louis Prasville."

M. Nicole banged the table with his fist.

"Enough of this humbug, monsieur! For twenty minutes, you and I have been beating about the bush. That will do. Let us understand each other. And, to begin with, drop your pistols. You can't imagine that I am frightened of those playthings! Stand up, sir, stand up, as I am doing, and finish the business: I am in a hurry."

He put his hand on Prasville's shoulder and, speaking with great deliberation, said:

"If, within an hour from now, you are not back from the Elysee, bringing with you a line to say that the decree of pardon has been signed; if, within one hour and ten minutes, I, Arsene Lupin, do not walk out of this building safe and sound and absolutely free, this evening four Paris newspapers will receive four letters selected from the correspondence exchanged between Stanislas Vorenglade and yourself, the correspondence which Stanislas Vorenglade sold me this morning. Here's your hat, here's your overcoat, here's your stick. Be off. I will wait for you."

Then happened this extraordinary and yet easily understood thing, that Prasville did not raise the slightest protest nor make the least show of fight. He received the sudden, far-reaching, utter conviction of what the personality known as Arsene Lupin meant, in all its breadth and fulness. He did not so much as think of carping, of pretending - as he had until then believed - that the letters had been destroyed by Vorenglade the deputy or, at any rate, that Vorenglade would not dare to hand them over, because, in so doing, Vorenglade was also working his own destruction. No, Prasville did not speak a word He felt himsell caught in a vise of which no human strength could force the jaws asunder. There was nothing to do but yield. He yielded.