I appreciate your special knowledge."

Our visitor sniggered.

"You do. You are, fortunately, the only man in London who does. Do you know what is the matter with you?"

"The same," said Holmes.

"Ah! You recognize the symptoms?"

"Only too well."

"Well, I shouldn't be surprised, Holmes. I shouldn't be sur- prised if it were the same. A bad lookout for you if it is. Poor Victor was a dead man on the fourth day — a strong, hearty young fellow. It was certainly, as you said, very surprising that he should have contracted an out-of-the-way Asiatic disease in the heart of London — a disease, too, of which I had made such a very special study. Singular coincidence, Holmes. Very smart of you to notice it, but rather uncharitable to suggest that it was cause and effect."

"I knew that you did it."

"Oh, you did, did you? Well, you couldn't prove it, anyhow. But what do you think of yourself spreading reports about me like that, and then crawling to me for help the moment you are in trouble? What sort of a game is that — eh?"

I heard the rasping, laboured breathing of the sick man. "Give me the water!" he gasped.

"You're precious near your end, my friend, but I don't want you to go till I have had a word with you. That's why I give you water. There, don't slop it about! That's right. Can you understand what I say?"

Holmes groaned.

"Do what you can for me. Let bygones be bygones," he whispered. "I'll put the words out of my head — I swear I will. Only cure me, and I'll forget it."

"Forget what?"

"Well, about Victor Savage's death. You as good as admitted just now that you had done it. I'll forget it."

"You can forget it or remember it, just as you like. I don't see you in the witness-box. Quite another shaped box, my good Holmes, I assure you. It matters nothing to me that you should know how my nephew died. It's not him we are talking about. It's you."

"Yes, yes."

"The fellow who came for me — I've forgotten his name — said that you contracted it down in the East End among the sailors."

"I could only account for it so."

"You are proud of your brains, Holmes, are you not? Think yourself smart, don't you? You came across someone who was smarter this time. Now cast your mind back, Holmes. Can you think of no other way you could have got this thing?"

"I can't think.