"I must leave you now," said the Minister. "Rivers, next week, remember. I am much obliged for your assistance, Mr. Marvell."
With this the Secretary for Foreign Affairs left the room.
The detective took up the box.
"How on earth did you come into this matter, Mr. Marvell?" asked Rivers.
"Very simply, sir. When Lord Ancoats got the box he telephoned to Scotland Yard, and I was sent for at once. As a matter of fact, I opened the box for his lordship. You're sure you wouldn't like to restore it yourself? The Vizier is ill in bed, and it won't be wanted till to-morrow."
"Sorry to disappoint you, Mr. Marvell," Rivers laughed; "but I'm sure it's safer in your hands."
Mr. Marvell nodded grimly. "Sooner or later, sir. Sooner or later," he said, as he walked to the door; "but don't try to be a footman next time."
With these enigmatical remarks the interview terminated.