“Hardly a development, but I'm not satisfied, Knox. I hate to be beaten.”

Twenty minutes later I was sitting in Harley's study, watching him restlessly promenading up and down before the fire.

“The police searched Kwen Lung's place from foundation to tiles,” he said. “I was there myself. Old Kwen Lung conveniently kept out of the way—still playing fan-tan, no doubt! But Ma Lorenzo was in evidence. She blandly declared that Kwen Lung never had a daughter! And in the absence of our friend the fireman, who sailed in the Seahawk, and whose evidence, by the way, is legally valueless—what could we do? They could find nobody in the neighbourhood prepared to state that Kwen Lung had a daughter or that Kwen Lung had no daughter. There are all sorts of fables about the old fox, but the facts about him are harder to get at.”

“But,” I explained, “the bloodstains on the joss!”

“Ma Lorenzo stumbled and fell there on the previous night, striking her skull against the foot of the figure.”

“What nonsense!” I cried. “We should have seen the wound last night.”

“We might have done,” said Harley musingly; “I don't know when she inflicted it on herself; but I did see it this morning.”

“What!”

“Oh, the gash is there all right, partly covered by her hair.”

He stood still, staring at me oddly.