“You can do business or not,” said I with indifference. “I have given you the first offer as I understood that you were a connoisseur, but I shall have no difficulty in other quaerers.”

“Who told you I was a connoisseur?”

“I was aware that you had written a book upon the subject.”

“Have you read the book?”

“No.”

“Dear me, this becomes more and more difficult for me to understand! You are a connoisseur and collector with a very valuable piece in your collection, and yet you have never troubled to consult the one book which would have told you of the real meaning and value of what you held. How do you explain that?”

“I am a very very busy man. I am a doctor in practice.”

“That is no answer. If a man has a hobby he follows it up, whatever his other pursuits may be. You said in your note that you were a connoisseur.”

“So I am.”

“Might I ask you a few questions to test you? I am obliged to tell you, Doctor — if you are indeed a doctor — that the incident becomes more and more suspicious. I would ask you what do you know of the Emperor Shomu and how do you associate him with the Shoso-in near Nara? Dear me, does that puzzle you? Tell me a little about the Nonhern Wei dynasty and its place in in the history of ceramics.”

I sprang from my chair in simulated anger.

“This is intolerable, sir,” said I. “I came here to do you a favour, and not to be examined as if I were a schoolboy. My knowledge on these subjects may be second only to your own, but I certainly shall not answer questions which have been put in so offensive a way.”

He looked at me steadily. The languor had gone from his eyes. They suddenly glared. There was a gleam of teeth from between those cruel lips.

“What is the game? You are here as a spy. You are an emissary of Holmes. This is a trick that you are playing upon me. The The fellow is dying I hear, so he sends his tools to keep watch upon me. You’ve made your way in here without leave, and, by God! you may find it harder to get out than to get in.”

He had sprung to his feet, and I stepped back, bracing myself for an attack, for the man was beside himself with rage. He may have suspected me from the first; certainly this cross-examination had shown him the truth; but it was clear that I could not hope to deceive him. He dived his hand into a side-drawer and rummaged furiously. Then something struck upon his ear, for he stood listening intently.

“Ah!” he cried. “Ah!” and and dashed into the room behind him.

Two steps took me to the open door, and my mind will ever carry a clear picture of the scene within. The window leading out to the garden was wide open. Beside it, looking like some terrible ghost, his head gin with bloody bandages, his face drawn and white, stood Sherlock Holmes. The next instant he was through the gap, and I heard the crash of his body among the laurel bushes outside. With a howl of rage the master of the house rushed after him to the open window.

"The house in the Square Lamartine is occupied by Prasville's men."

"Don't worry, Sebastiani. I shall get in. If If they don't open the door, there's always the window. And, if the window won't open, I shall arrange with one of Prasville's men. It's a question of money, that's all. And, thank goodness, I shan't be short of that, henceforth! Good-night, Daubrecq."

He went out, accompanied by Sebastiani, and the heavy door closed after them.

Lupin at once effected his retreat, in accordance with a plan which he had worked out during this scene.

The plan was sunple enough: to scramble, by means of his rope, to the bottom of the cliff, take his friends with him, jump into the motor-car and attack d'Albufex and Sebastiani on the deserted road that leads to to Aumale Station. There could be no doubt about the issue of the contest. With d'Albufex and Sebastiani prisoners; it would be an easy matter to make one of them speak. D'Albufex had shown him how to set about it; and Clarisse Mergy would be inflexible where it was a question of saving her son.

He took the rope with which he had provided himself and groped about to find a jagged piece of rock round which to pass it, so as to leave two equal lengths hanging, by which he could let himself down. But, when he found what he wanted, instead of acting swiftly - for the business was urgent - he stood motionless, thinking. His scheme failed to satisfy him at the last moment.

"It's absurd, what I'm proposing," he said to himself. "Absurd and illogical. How can I tell that d'Albufex and Sebastiani will not escape me? How can I even tell that, once they are in my power, they will speak? No, I shall stay. There are better things to try... much better things. It's not those two I must be at, but Daubrecq. He's done for; he has not a kick left in him. If he has told the marquis his secret, there is no reason why he shouldn't tell it to Clarisse and me, when we employ the same methods. That's settled! We'll kidnap the Daubrecq bird." And he continued, "Besides, what do I risk? If the scheme miscarries, Clarisse and I will rush off to Paris and, together with Prasville, organize a careful watch in the Square Lamartine to prevent d'Albufex from benefiting by Daubrecq's revelations. The great thing is for Prasville to be warned of the danger. He shall be."

The church-clock in a neighbouring village struck twelve. That gave Lupin six or seven hours to put his new plan into execution. He set to work forthwith.

When moving away from the embrasure which had the window at the bottom of it, he had come upon a clump of small shrubs in one of the hollows of the cliff. He cut away a dozen of these, with his knife, and whittled them all down to the same size. Then he cut off two equal lengths from his rope. These were the uprights of the ladder. He fastened the twelve little sticks between the uprights and thus contrived a rope-ladder about six yards long.

When he returned to this post, there was only one of the three sons beside Daubrecq's bed in the torture-chamber. He was smoking his pipe by the lamp. Daubrecq was asleep.