“What is he afraid of exactly?”

Inspector Weymouth put down his coffee cup and bent forward slightly.

“He knows something,” he said in a low voice, “and they are aware that he knows it!”

“And what is this he knows?”

Nayland Smith stared eagerly at the detective.

“Every man has his price,” replied Weymouth with a smile, “and Burke seems to think that you are a more likely market than the police authorities.”

“I see,” snapped Smith.  “He wants to see me?”

“He wants you to go and see him,” was the reply.  “I think he anticipates that you may make a capture of the person or persons spying upon him.”

“Did he give you any particulars?”

“Several.  He spoke of a sort of gipsy girl with whom he had a short conversation one day, over the fence which divides his cousin’s flower plantations from the lane adjoining.”

“Gipsy girl!” I whispered, glancing rapidly at Smith.

“I think you are right, Doctor,” said Weymouth with his slow smile; “it was Karamaneh.  She asked him the way to somewhere or other and got him to write it upon a loose page of his notebook, so that she should not forget it.”

“You hear that, Petrie?” rapped Smith.

“I hear it,” I replied, “but I don’t see any special significance in the fact.”

“I do!” rapped Smith; “I didn’t sit up the greater part of last night thrashing my weary brains for nothing!  But I am going to the British Museum to-day, to confirm a certain suspicion.”  He turned to Weymouth.  “Did Burke go back?” he demanded abruptly.

“He returned hidden under the empty boxes,” was the reply.  “Oh! you never saw a man in such a funk in all your life!”

“He may have good reasons,” I said.

“He has good reasons!” replied Nayland Smith grimly; “if that man really possesses information inimical to the safety of Fu-Manchu, he can only escape doom by means of a miracle similar to that which has hitherto protected you and me.”

“Burke insists,” said Weymouth at this point, “that something comes almost every night after dusk, slinking about the house—­it’s an old farmhouse, I understand; and on two or three occasions he has been awakened (fortunately for him he is a light sleeper) by sounds of coughing immediately outside his window.  He is a man who sleeps with a pistol under his pillow, and more than once, on running to the window, he has had a vague glimpse of some creature leaping down from the tiles of the roof, which slopes up to his room, into the flower beds below . . .”

“Creature!” said Smith, his gray eyes ablaze now—­“you said creature!”

“I used the word deliberately,” replied Weymouth, “because Burke seems to have the idea that it goes on all fours.”

There was a short and rather strained silence.  Then: 

“In descending a sloping roof,” I suggested, “a human being would probably employ his hands as well as his feet.”