Then the detective said something else in a joking way, and the porter shook his head. "I haven't got a key! He had another lock put on. Lots of business gentlemen do that." And then he asked anxiously, "D'you see any objection to my telephoning to Messrs. Drew & Co.--they're the agents, you know? 'Twould make me more comfortable in my own mind, because then I shouldn't get blamed--whatever happened. They'd send some one along in about five minutes--they've got a West End office." The Scotland Yard official looked round for instructions from Sir Angus, and the latter imperceptibly nodded. "All right--we'll wait five minutes. I've brought some tools along." "Tools?" The porter stared at him. "Sometimes, you know, we do find it necessary to burst open a door!" The five minutes--it was barely more--seemed the longest time Katty had ever spent in waiting. Lord St. Amant took pity on her obvious unease and anxiety. He walked out with her to the street, and they paced quickly up and down in the cold, wintry air. "Do you think we shall find anything?" she murmured at last. He answered gravely, "I confess that the whole thing looks very queer to me. I haven't lived to my time of life without becoming aware that amazing, astounding things _do_ happen. Perhaps I am over-influenced by the fact that years and years ago, when I was a boy, a school-fellow of mine, of whom I was very fond, did shoot himself accidentally with a pistol. He was staying with us, and he had gone on in front of me into the gun-room--and I--I went in and found him lying on the ground--dead." "How horrible!" murmured Katty. "How very horrible!" and her face blanched. As they turned yet once more, a taxi drove quickly up to the door of Duke Mansion, and a young, clean-shaven man jumped out. Instinctively he addressed himself to Sir Angus Kinross: "About this tenant of ours--Mr. Fernando Apra? To the best of my belief he is a perfectly respectable man. He gave a very good reference, that of a big Paris banker, and with us, at any rate, he was quite frank about his business. He has obtained a gambling concession from this new Portuguese Government, and he came to London to try and raise money for the building of a Casino, and so on. He's an optimistic chap, and his notion is to create a kind of Portuguese Monte Carlo. He told us quite frankly that he didn't intend to keep the office going here for more than six months, or possibly a year, and we arranged that he should be able to surrender his three years' lease--we don't let these rooms under a three years' agreement--on the payment of a rather substantial fine. I think the porter is sure to have a key which will admit you into his room--I understand you want to get into his office?"