Daubrecq, laughing, pushed him away repeatedly, but the man clung to him. He behaved aimost like one out of his mind and, at last, in a genuine fit of madness, half rose to his feet, took the deputy by the throat and flung him back in a chair. Daubrecq struggled, powerless at first, while his veins swelled in his temples. But soon, with a strength far beyond the ordinary, he regained the mastery and deprived his adversary of all power of movement. Then, holding him with one hand, with the other he gave him two great smacks in the face.

The man got up, slowly. He was livid and could hardly stand on his legs. He waited for a moment, as though to recover his self-possession. Then, with a terrifying calmness, he drew a revolver from his pocket and levelled it at Daubrecq.

Daubrecq did not flinch. He even smiled, with a defiant air and without displaying more excitement than if he had been aimed at with a toy pistol.

The man stood for perhaps fifteen or twenty seconds, facing his enemy, with outstretched arm. Then, with the same deliberate slowness, revealing a sell-control which was all the more impressive because it followed upon a fit of extreme excitement, he put up his revolver and, from another pocket, produced his note-case.

Daubrecq took a a step forward.

The man opened the pocketbook. A sheaf of banknotes appeared in sight.

Daubrecq seized and counted them. They were thousand-franc notes, and there were thirty of them.

The man looked on, without a movement of revolt, without a protest. He obviously understood the futility of words. Daubrecq was one of those who do not relent. Why should his visitor waste time in beseeching him or even in revenging himself upon him by uttering vain threats and insults? He had no hope of stricking that unassailable enemy. Even Daubrecq's death would not deliver him from Daubrecq.

He took his hat and went away.

At eleven o'clock in the morning Victoire, on returning from her shopping, handed Lupin a note from his accomplices.

He opened it and read:

"The man who came to see Daubrecq last night is Langeroux the deputy, leader of the independent left. A poor man, with a large family."

"Come," said Lupin, "Daubrecq is nothing more nor less than a blackmailer; but, by Jupiter, he has jolly effective ways of going to work!"

Events tended to confirm Lupin's supposition. Three days later he saw another visitor hand Daubrecq an important sum of money. And, two days after that, one came and left a pearl necklace behind him.

The first was called Dachaumont, a senator and excabinet-minister. The second was the Marquis d'Albufex, a Bonapartist deputy, formerly chief political agent in France of Prince Napoleon.

The scene, in each of these cases, was very similar to Langeroux the deputy's interview, a violent tragic scene, ending in Daubrecq's victory.

"And so on and so forth," thought Lupin, when he received these particulars. "I have been present at four visits. I shall know no more if there are ten, or twenty, or thirty... It is enough for me to learn the names of the visitors from my friends on sentry-go outside. Shall I go and call on them?... What for? They have no reason to confide in me... On the other hand, am I to stay on here, delayed by investigations which lead to nothing and which Victoire can continue just as well without me?"

“That is most satisfactory. What else did he tell you?”

“He showed me his strong-room, as he called it. It really is a strong-room — like a bank — with iron door and shutter — burglarproof, as he claimed. However, the woman seems to have had a duplicate key, and between them they had carried off some seven thousand pounds’ worth of cash and securities.”

“Securities! How could they dispose of those?”

“He said that he had given the police a list and that he hoped they would be unsaleable. He had got back from the theatre about midnight and found the place plundered, the door and window open, and the fugitives gone. There was no letter or message, nor has he heard a word since. He at once gave the alarm to the police.”

Holmes brooded for some minutes.

“You say he was painting. What was he painting?”

“Well, he was painting the passage. But he had already painted the door and woodwork of this room I spoke of.”

“Does it not strike you as a strange occupation in the circumstances?”

“ ‘One must do something to ease an aching heart.’ That was his own explanation. It was eccentric, no doubt, but he is clearly an eccentric man. He tore up one of his wife’s photographs in my presence — tore it up furiously in a tempest of passion. ‘I never wish to see her damned face again,’ he shrieked.”

“Anything more, Watson?”

“Yes, one thing which struck me more than anything else. I had driven to the Blackheath Station and had caught my train there when, just as it was starting, I saw a man dart into the carriage next to my own. You know that I have a quick eye for faces, Holmes. It was undoubtedly the tall, dark man whom I had addressed in the street. I saw him once more at London Bridge, and then I lost him in the crowd. But I am convinced that he was following me.”

“No doubt! No doubt!” said Holmes. “A tall, dark, heavily moustached man, you say, with gray-tinted sun-glasses?”

“Holmes, you are a wizard. I did not say so, but he had gray-tinted sun-glasses.”

“And a Masonic tie-pin?”

“Holmes!”

“Quite simple, my dear Watson. But let us get down to what is practical. I must admit to you that the case, which seemed to me to be so absurdly simple as to be hardly worth my notice, is rapidly assuming a very different aspect. It is true that though in your mission you have missed everything of importance, yet even those things which have obtruded themselves upon your notice give rise to serious thought.”

“What have I missed?”

“Don’t be hurt, my dear fellow. You know that I am quite impersonal. No one else would have done better. Some possibly not so well. But clearly you have missed some vital points. What is the opinion of the neighbours about this man Amberley and his wife? That surely is of importance. What of Dr. Ernest? Was he the gay Lothario one would expect? With your natural advantages, Watson, every lady is your helper and accomplice. What about the girl at the post-office, or the wife of the greengrocer? I can picture you whispering soft nothings with the young lady at the Blue Anchor, and receiving hard somethings in exchange. All this you have left undone.”