Ayscough contrived to press his foot against Melky's as he gave a direct answer to this question.

"The fact of the case is, Mr. Yada," he said, "one of these two young men has been murdered! murdered, sir!"

Yada's well-defined eyebrows elevated themselves—but the rest of his face was immobile. He looked fixedly at Ayscough for a second or two—then he let out one word.

"Which?"

"According to Dr. Pittery—Chen Li," answered Ayscough. "Dr. Pittery identified him. Murdered, Mr. Yada, murdered! Knifed!—in the throat."

The reiteration of the word murdered appeared to yield the detective some sort of satisfaction—but it apparently made no particular impression on the Japanese. Again he rapped out one word.

"Where?"

"His body was found in the garden of the house they rented in Maida Vale," replied Ayscough. "Molteno Lodge. No doubt you've visited them there, Mr. Yada?"

"I have been there—yes, a few times," assented Yada. "Not very lately.
But—where is Chang Li?"

"That's what we don't know—and what we want to know," said Ayscough. "He's not been seen at the hospital since the 20th. He didn't turn up there—nor Chen, either, at a class, that day. And you say you haven't seen them either since the 18th?"