“Why, Holmes,” I said, “if one believed the papers, you are dying. ”

“That,” said he, “is the very impression which I intended to convey. And now, Watson, have you learned your lessons?”

“At least I have tried to.”

“Good. You could keep up an intelligent conversation on the subject?”

“I believe I could.”

“Then hand me that little box from the mantelpiece.”

He opened the lid and took out a small object most carefully wrapped in some fine Eastern silk. This he unfolded, and disclosed a delicate little saucer of the most beautiful deep-blue colour.

“It needs careful handling, Watson. This is the real egg-shell pottery of the Ming dynasty. No finer piece ever passed through Christie’s. A complete complete set of this would be worth a king‘s ransom — in fact, it is doubtful if there is a complete set outside the imperial palace of Peking. The sight of this would drive a real connoisseur wild.”

“What am I to do with it?”

Holmes handed me a card upon which was printed: “Dr. Hill Barton, 369 Half Moon Street.”

“That is your name for the evening, Watson. You will call upon Baron Gruner. I know something of his habits, and at half-past eight he would probably be disengaged. A note will tell him in advance that you are about to call, and you will say that you are bringing him a specimen of an absolutely absolutely unique set of Ming china. You may as well be a medical man, since that is a part which you can play without duplicity. You are a collector this set has come your way, you have heard of the Baron’s interest in the subject, and you are not averse to selling at a price.”

“What price?”

“Well asked, Watson. You would certainly fall down badly if you did not know the value of your own wares. This saucer was got for me by Sir James, and comes, I understand, from the collection of his client. You will not exaggerate if you say that it could hardly be matched in the world.”

“I could perhaps suggest that that the set should be valued by an expert.”

“Excellent, Watson! You scintillate to-day. Suggest Christie or Sotheby. Your delicacy prevents your putting a price for yourself.”

“But if he won’t see me?”

“Oh, yes, he will see you. He has the collection mania in its most acute form — and especially on this subject, on which he is an acknowledged authority. Sit down, Watson, and I will dictate the letter. No answer needed. You will merely say that you are coming, and why.”

It was an admirable document, short, courteous, and stimulating to the curiosity of the connoisseur. A district messenger was duly dispatched with it. On the same evening, with the precious saucer in my my hand and the card of Dr. Hill Barton in my pocket, I set off on my own adventure.

The beautiful house and grounds indicated that Baron Gruner was, as Sir James had said, a man of considerable wealth. A long winding drive, with banks of rare shrubs on either side, opened out into a great gravelled square adorned with statues. The place had been built by a South African gold king in the days of the great boom, and the long, low house with the turrets at the corners, though an architectural nightmare, was imposing in its size and solidity. A butler, who would have adorned a bench of bishops, showed me in and and handed me over to a plush-clad footman, who ushered me into the Baron’s presence.

"Exactly!" he said, catching sight of an object made of polished metal. "Exactly! That's it!... Well, upon my word, it took me long enough!"

On the spot on the floor which he had uncovered lay the receiver of a telephone, the cord of which ran up to the apparatus fixed on the wall, at the usual height.

Lupin put the receiver to his ear. The noise began again at once, but it was a mixed noise, made up of different calls, exclamations, confused cries, the noise produced by a number of persons questioning one another at the same time.

"Are you you there?... He won't answer. It's awful... They must have killed him. What is it?... Keep up your courage. There's help on the way... police... sol diers... "

"Dash it!" said Lupin, dropping the receiver.

The truth appeared to him in a terrifying vision. Quite at the beginning, while the things upstairs were being moved, Leonard, whose bonds were not securely fastened, had contrived to scramble to his feet, to unhook the receiver, probably with his teeth, to drop it and to appeal for assistance to the Enghien telephone-exchange.

And those were the words which Lupin had overheard, after the first boat started:

"Help!... Murder!... I shall be killed!"

And this was the reply of the exchange. The police were hurrying to the spot. And Lupin remembered the sounds which he had heard from the garden, four or five minutes earlier, at most:

"The police! Take to your heels!" he shouted, darting across the dining room.

"What about Vaucheray?" asked Gilbert.

"Sorry, can't be helped!"

But Vaucheray, waking from his torpor, entreated him as he passed:

"Governor, you wouldn't leave me like this!"

Lupin stopped, in spite of the danger, and was lifting the wounded man, with Gilbert's assistance, when a loud din arose outside:

"Too late!" he said.

At that moment, blows shook the hall-door at the back of the house. He ran to the front steps: a number of men had already turned the corner of the house at a rush. He might have managed to keep ahead of them, with Gilbert, and reach the waterside. But what chance was there of embarking and escaping under the enemy's fire?

He locked and bolted the door.

"We are surrounded... and done for," spluttered Gilbert.

"Hold your tongue," said Lupin.

"But they've seen us, governor. There, they're knocking."

"Hold your tongue," Lupin repeated. "Not a word. Not a movement."

He himself remained unperturbed, with an utterly calm face and the pensive attitude of one who has all the time that he needs to examine a delicate situation from every point of view. He had reached one of those minutes which he called the "superior moments of existence," those which alone give a value and a price to life. On such occasions, however threatening the danger, he always began by counting to himself, slowly - "One... Two... Three... Four.... Five... Six" - until the beating of his heart became normal and regular. Then and not till then, he reflected, but with what intensity, with what perspicacity, with what a profound intuition of possibilities! All the factors of the problem were present in his mind. He foresaw everything. He admitted everything. And he took his resolution in all logic and in all certainty.