"I assured myself of something last night—after you left me," he said, with a knowing look. "I used your card to advantage, Mr. Detective. I went to the mortuary."

Ayscough contrived to signal to the Inspector to leave the talking to him. He put his thumbs in the armholes of his waistcoat, assumed an easy attitude as he leaned against the door, and looked speculatively at the new comer.

"Aye?—and what made you do that now, Mr. Yada?" he asked, half-carelessly. "A bit of curiosity, eh?"

"Not idle curiosity, Mr. Detective," replied Yada. "I wanted to know, to make certain, which of the two Chinamen it really was who was there—dead. I saw him. Now I know. Chen Li!"

"Well?" said Ayscough.

Yada suddenly twisted round in his chair, and slowly glanced at the listening men on either side of the desk. They were cool, bold, half-insolent eyes which received face after face, showing no recognition of any until they encountered Melky Rubinstein's watchful countenance. And to Melky, Yada accorded a slight nod—and turned to Ayscough again.

"Which," he asked calmly, "which of these gentlemen is the owner of the diamond? Which is the one who has lost eighty thousand pounds in bank-notes? That is what I want to know before I say more."

In the silence which followed upon Ayscough's obvious doubt about answering this direct question, Levendale let out a sharp, half-irritable exclamation:

"In God's name!" he said, "who is this young man? What does he know about the diamond and the money?"

Yada turned and faced his questioner—and suddenly smiling, thrust his hand in his breast pocket and drew out a card-case. With a polite bow he handed a card in Levendale's direction.