John Dory nodded.

“Quite right,” he answered. “If every one were to obey his orders as literally, there would be fewer robberies. However, you see that this man recognizes me.”

The butler turned toward an elderly gentleman in a pink coat and riding-breeches, who had just descended into the hall.

“His lordship is here,” he said. “He will give you permission, without a doubt. There is a gentleman from Scotland Yard, your lordship,” he explained, “who wishes to enter the morning-room to speak with the sergeant.”

“Inspector John Dory, at your lordship’s service,” saluting. “I have been sent down from town to help in this little business.”

Lord Clenarvon smiled.

“I should have thought that, under the circumstances,” he said, “two of you would have been enough. Still, it is not for me to complain. Pray go in and speak to the sergeant. You will find him inside. Rather dull work for him, I’m afraid, and quite unnecessary.”

“I am not so sure, your lordship,” Dory answered. “The Clenarvon diamonds are known all over the world, and I suppose there isn’t a thieves’ den in Europe that does not know that they will remain here exposed with your daughter’s other wedding presents.”

Lord Clenarvon smiled once more and shrugged his shoulders. He was a man who had unbounded faith in his fellow-creatures.

“I suppose,” he said, “it is the penalty one has to pay for historical possessions. Go in and talk to the sergeant, by all means, Mr. Dory. I hope that Graves will succeed in making you comfortable during your stay here.”