She pulled out a case, opened it and took one fleeting look, then thrust the jewel case into a long pocket on one side of her dress. In twenty seconds the safe was emptied, and the girl nodded to her companion. “Get the window open. Put the light out first. You’ll find it a squeeze, Jimmy. It’s easy enough for me.” Outside the “detective-sergeant” was having trouble with the ’phone. He put it down and turned despairingly to his lordship. “If you don’t mind, sir, I’ll run down to Scotland Yard. I’ve got a motor-bicycle waiting. I don’t seem able to get into touch with the superintendent. Perhaps you wouldn’t mind going into the room and keeping my man company for a little while.” “Surely,” said his lordship indignantly, “your man is perfectly capable of carrying out his instructions without my assistance? I am scarcely accustomed----” He paused for breath. “Very good, sir,” said the “sergeant” respectfully. A little later they heard the “pop-pop” of his motor-bicycle as it left. “We had better do what the sergeant suggests,” said Lewinstein, “we can’t do any harm by going in, at any rate.” “My dear fellow,” repeated his lordship testily, “that police officer is quite capable of looking after the girl. Don’t you agree, Johnson?” Johnson, the private detective, did not immediately reply. “Well, sir,” he said, “I don’t mind telling you that I feel a bit uneasy about the lady being in the same room as the jewels.” “Good lord!” gasped his lordship, “I didn’t think of that. Pooh! Pooh! There’s a policeman with her. You know these officers, I suppose, Johnson?” “No, sir,” said Mr. Johnson frankly, “I don’t. I’m not brought much into touch with Scotland Yard men, and they’re constantly changing from one division to another, so it’s difficult to keep up with them.” His lordship pondered, a horrible fear growing within him. “Yes, perhaps you’re right, Lewinstein,” he said, “we’ll go in.” He put the key in the door and turned it. The room was in darkness. “Are you there?” squeaked his lordship in such a tone of consternation that Lewinstein could have laughed. There was a click and the lights went on, but the room was empty. Lord Claythorpe’s first glance was to the safes. Apparently they were closed, but on three of them was a square label, and Lewinstein was the first to see and understand the significance of that sign. “What is it? What is it?” said Lord Claythorpe in a shrill tremolo, pointing with shaking fingers to the labels. “The visiting card of Four Square Jane!” said Lewinstein. III Chief Superintendent Dawes, of Scotland Yard, was a comparatively young man, considering the important position he held. It was the boast of his department--Peter himself did very little talking about his achievements--that never once, after he had picked up a trail, was Peter ever baffled.