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 up his revolver and, from another pocket, produced his note-case.

Daubrecq took 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?"

“No, I heard nothing. But, indeed, Mr. Holmes, I was so agitated and horrified by this terrible outbreak that I rushed to get back to the peace of my own room, and I was incapable of noticing anything which happened.”

“You say that you returned to your room. Did you leave it again before next morning?”

“Yes, when the alarm came that the poor creature had met her death I ran out with the others.”

“Did you see Mr. Gibson?”

“Yes, he had just returned from the bridge when I saw him. He had sent for the doctor and the police.”

“Did he seem to you much perturbed?”

“Mr. Gibson is a very strong, self-contained man. I do not think that he would ever show his emotions on the surface. But I, who knew him so well, could see that he was deeply concerned.”

“Then we come to the all-important point. This pistol that was found in your room. Had you ever seen it before?”

“Never, I swear it.”

“When was it found?”

“Next morning, when the police made their search.”

“Among your clothes?”

“Yes, on the floor of my wardrobe under my dresses.”

“You could not guess how long it had been there?”

“It had not been there the morning before.”

“How do you know?”

“Because I tidied out the wardrobe.”

“That is final. Then someone came into your room and placed the pistol there in order to inculpate you.”

“It must have been so.”

“And when?”

“It could only have been at meal-time, or else at the hours when I would be in the schoolroom with the children.”

“As you were when you got the note?”

“Yes, from that time onward for the whole morning.”

“Thank you, Miss Dunbar. Is there any other point which could help me in the investigation?”

“I can think of none.”

“There was some sign of violence on the stonework of the bridge — a perfectly fresh chip just opposite the body. Could you suggest any possible explanation of that?”

“Surely it must be a mere coincidence.”

“Curious, Miss Dunbar, very curious. Why should it appear at the very time of the tragedy, and why at the very place?”

“But what could have caused it? Only great violence could have such an effect.”

Holmes did not answer. His pale, eager face had suddenly assumed that tense, far-away expression which I had learned to associate with the supreme manifestations of his genius. So evident was the crisis in his mind that none of us dared to speak, and we sat, barrister, prisoner, and myself, watching him in a concentrated and absorbed silence. Suddenly he sprang from his chair, vibrating with nervous energy and the pressing need for action.

“Come, Watson, come!” he cried.

“What is it, Mr. Holmes?”

“Never mind, my dear lady. You will hear from me, Mr. Cummings. With the help of the god of justice I will give you a case which will make England ring. You will get news by to-morrow, Miss Dunbar, and meanwhile take my assurance that the clouds are lifting and that I have every hope that the light of truth is breaking through.”