“Do you mean this?” he asked.

“I do,” answered Peter. “Please do not think that I mean to make any reflection upon your skill. It is just a chance that I was able to see what you were not able to see. In an hour’s time, you shall restore the Clenarvon diamonds to Lord Clenarvon. You shall take the reward which he has just offered, of a thousand pounds. And I promise you that the manner in which you shall recover the jewels shall be such that you will be famous for a long time to come.”

“You are a wonderful man!” said Dory, hoarsely. “Do you mean, then, that the jewels were not with those men in the motor-car?”

“Of course not!” Peter Ruff answered. “But come along. The story will develop.”

At half-past ten that morning, a motor-car turned out from the garage at Clenarvon Court, and made its way down the avenue. In it was a single passenger—the dark-faced Parisian valet of the Marquis de Sogrange. As the car left the avenue and struck into the main road, it was hailed by Peter Ruff and John Dory, who were walking together along the lane.

“Say, my man,” Peter Ruff said, addressing the chauffeur, “are you going to the station?”

“Yes, sir!” the man answered. “I am taking down the Marquis de Sogrange’s servant to catch the eleven o’clock train to town.”

“You don’t mind giving us a lift?” Peter Ruff asked, already opening the door.

“Certainly not, sir,” the man answered, touching his hat.

Peter Ruff and John Dory stepped into the tonneau of the car. The man civilly lifted the hatbox from the seat, and made room for his enforced companions. Nevertheless, it was easy to see that he was not pleased.