“I work sometimes as a private person, sir,” he said, “but it is not to be forgotten that I am an officer of the law. It is not for us to state motives or even to afford explanations for our behaviour. I have watched your house at Hatch End, Sir Timothy, and I have come to the conclusion that unless you are willing to discuss this matter with me in a different spirit, I am justified in asking the magistrates for a search warrant.”

Sir Timothy sighed.

“Mr. Ledsam,” he said, “I think, after all, that yours is the most interesting end of this espionage business. It is you who search for motives, is it not, and pass them on to our more automatic friend, who does the rest. May I ask, have you supplied the motive in the present case?”

“I have failed to discover any motive at all for Reginald Wilmore's disappearance,” Francis admitted, “nor have I at any time been able to connect you with it. Mr. Shopland's efforts, however, although he has not seen well to take me into his entire confidence, have my warmest approval and sympathy. Although I have accepted your very generous hospitality, Sir Timothy, I think there has been no misunderstanding between us on this matter.”

“Most correct,” Sir Timothy murmured. “The trouble seems to be, so far as I am concerned, that no one will tell me exactly of what I am suspected? I am to give Mr. Shopland the run of my house, or he will make his appearance in the magistrate's court and the evening papers will have placards with marvellous headlines at my expense. How will it run, Mr. Shopland—

“'MYSTERIOUS DISAPPEARANCE OF A YOUNG GENTLEMAN.
MILLIONAIRE'S HOUSE TO BE SEARCHED.'”

“We do not necessarily acquaint the press with our procedure,” Shopland rejoined.

“Nevertheless,” Sir Timothy continued, “I have known awkward consequences arise from a search warrant too rashly applied for or granted. However, we are scarcely being polite. So far, Miss Hyslop has had very little to say.”

The young lady was not altogether at her ease.

“I have had very little to say,” she repeated, “because I did not expect an audience.”