"That is so," Russell said gravely. "But for Samuel Flower I should be a rich man. But for Samuel Flower my friend Mercer would not be so desperately situated as he is. I think I have given you enough evidence of my bona fides in the piece of string which you are holding in your hand."

"I am not going to deny it," Uzali said. "And I see the necessity for caution. I suppose you realize that Mr. Flower is in some danger?"

"Flower is in imminent peril of his life I know," Russell replied. "Upon my word, I hardly know how to go on. To all practical purposes, you are as good as an Englishman, Mr. Uzali, and you know our laws as well as I do. If anything happened to Flower now and the trouble were traced home to you, for instance, you would have considerable difficulty in saving your neck. In other words, I am going to accuse you of being concerned in a conspiracy to put an end to Samuel Flower. I know this is a bold assertion."

"Oh, we will grant it for the moment," Uzali said coolly. "I confess you startled me when you passed me that piece of string. I see you understand the significance of those five knots, and, indeed, you have already told me that you have spent a good deal of your time in North Borneo. You pay me the compliment of deeming me to be an antagonist worthy of his steel, and I have an equal respect for your courage and audacity. But you are wrong in asserting that Samuel Flower stands in danger from me at the present moment. Later, perhaps, circumstances may alter. In the meantime he is as safe as yourself."

The last words were uttered with a grimness which was not lost upon the listeners.

"I thank you for those words," Russell said gravely, "and none the less because they prove to me that you don't know everything. You are unaware, I suppose, that two of your fellow-countrymen were, until recently, engaged to a circus proprietor who is touring in Kent. It does not matter who this circus proprietor is. The main point is that he picked these men up in the Mediterranean and they have been a great draw to his show. A little time ago the circus was at a place called Castlebridge, which happens to be quite close to Maldon Grange, the country residence of our friend Mr. Samuel Flower."

Uzali nodded his lean yellow head restlessly. It was evident that this information was new to him. He looked at Russell rather searchingly, as if trying to read his inmost secrets. The company in the theatre was beginning to get smaller. Not more than a score or two of guests remained, and these were mostly men who had crowded into the refreshment-room.

"You cannot tell how vastly I am obliged to you," Uzali said. "But please go on. I give you my word of honour that I had not the least idea of this. I had not the remotest knowledge that one of my own clansmen was in England. But I still see you have something important to say. I am all attention."

"Well, how, I don't know," Russell resumed, "but these men found out that Samuel Flower was in the neighbourhood. They made one or two excursions to Maldon Grange, because my friend Mercer happened to see them himself. He will describe to you what incantations they were going through and the mysterious way in which they vanished when he interrupted them. Late that night an attack was made on the life of Mr. Flower, and, but for the intervention of Dr. Mercer, the ship-owner's troubles would have been at an end. But perhaps my friend had better tell the story in his own way."

"Incantations," Uzali muttered. "Oh, yes, I understand. There were brass crucibles, a peculiar smell, strange globes of light. Oh, yes, I have seen it all before. And, mind you, it is not the poor make-believe of magic such as you get in Europe. That was the real thing. But I am interrupting you, doctor. I shall be greatly obliged if you will tell me everything."