"Oh, you've been a ship's doctor," Flower said swiftly.

Mercer bit his lip with vexation. The slip was an awkward one, but after that exclamation Flower showed no disposition to carry the query farther, and Wilfrid began to breathe more freely. He went on composedly enough.

"The ship was laid up for several weeks for repairs. Not caring to be idle I went up country on an exploring expedition, and very rough work it was. As you may be aware, the Malays are both treacherous and cruel, but so long as one treated them fairly, I had nothing to grumble about. I cured one or two of them from slight illnesses and they were grateful. But there was one man there, his name does not matter, who was hated and feared by them all. I fancy he was an orchid collector. Anyhow, he had a retinue of servants armed with modern weapons, and he led the natives a terrible life. I purposely avoided him because I did not like him or his methods. One day I had a note from a servant asking me to come and see him as he was at the point of death. When I reached the man's quarters I found that all his staff had deserted him, taking everything they could lay hands on. The man lay on his bed dead, and with the most horrible expression of pain on his face I have ever seen. I could find no cause of death, I could find no trace of illness even. And by what mysterious means he was destroyed I have not the slightest notion. All I know is this—round his forehead and the back of his head was a tightly twisted piece of silken string with five knots in it, which might be the very counterpart of the fragment you hold in your hand."

"And that is all you have to tell us?" Flower asked. He had recovered himself, except that his eyes were strangely dilated. "It seems a pity to leave a story in that interesting stage. Is there no sequel?"

"As far as I know, none," Wilfrid admitted. "Still, it is rather startling that I should come upon an echo from the past like this. But I am wasting your time, Mr. Flower. If you would like me to come and see you tomorrow——"

But Flower did not seem to be listening. Apparently he was debating some project in his mind.

"No," he said in his quick, sharp way. "I should like you to come again this evening. We have some friends coming in after dinner, and if you don't mind dropping in informally in the character of a doctor and guest I shall be greatly obliged. Besides it may do you good."

Wilfrid was not blind to the material side of the suggestion, but did not accept the invitation too readily. He would look in about half-past nine. He had said nothing as to meeting Beatrice before. Neither did she allude to the topic, for which he was grateful. Beatrice led the way to the door.

"I am not to be disturbed, mind," Flower called out. "I am going into the library for a couple of hours and I want you to send James Cotter to me, Beatrice. I can see no one till dinner-time."

Flower strode away to the library, where he transacted most of his business when out of town, and a few moments later there entered a small, smiling figure in black, humble of face, and with a quick, nervous habit of rubbing his hands one over the other as if he were washing them. This was James Cotter, Flower's confidant and secretary, and the one man in the world who was supposed to know everything of the inner life of the wealthy ship-owner.