The men sat in the drawing-room. Presently Mrs. Hamer entered—a shortish, sharp, keen-eyed woman of forty-five. "This is Mr. Dorrington," said Hamer, "of Dorrington & Hicks, private detectives. He wants us to give him that diamond."

The little woman gave a sort of involuntary bounce, and exclaimed. "What? Diamond? What d'ye mean?"

"Oh, it's no good, Maria," Hamer answered dolefully. "I've tried it every way myself. One comfort is we're safe, as long as we give it up. Here," he added, turning to Dorrington, "show her some of your evidence—that'll convince her."

Very politely Dorrington brought forth, with full explanations, the cork and the broken glass; while Mrs. Hamer, biting hard at her thin lips, grew shinier and redder in the face every moment, and her hard gray eyes flashed fury.

"And you let this man," she burst out to her husband, when Dorrington had finished, "you let this man leave your office with these things in his possession after he had shown them to you, and you as big as he is, and bigger! Coward!"

"My dear, you don't appreciate Mr. Dorrington's forethought, hang it! I made preparations for the very line of action you recommend, but he was ready. He brought out a very well kept revolver, and he has it in his pocket now!"

Mrs. Hamer only glared, speechless with anger.

"You might just get Mr. Dorrington a whisky and soda, Maria," Hamer pursued, with a slight lift of the eyebrows which he did not intend Dorrington to see. The woman was on her feet in a moment.

"Thank you, no," interposed Dorrington, rising also, "I won't trouble you. I'd rather not drink anything just now, and, although I fear I may appear rude, I can't allow either of you to leave the room. In short," he added, "I must stay with you both till I get the diamond."

"And this man Bouvier," asked Mrs. Hamer, "what is his right to the stone?"