He made no reply. There was a second's hesitation, a last opportunity, of which he declined to avail himself--then the door was closed. A few minutes later he locked it, went back to his workshop, and from a cupboard drew out a whisky bottle and some soda. "Here's a cursed mess!" he muttered dolefully, as he mixed himself a drink. * * * * * Mr. Paul Brodie laid down his cigar and newspaper and swung round in his chair to receive a visitor, already, in his mind, a prospective new client. A small boy had opened the door. "The lady, sir," he announced. Mr. Brodie recognised his visitor with a thrill of expectancy. "Say, this is Miss Letchowiski, isn't it?" he exclaimed, holding out his hand. "Glad to see you, young lady. Please take a seat." Rosa ignored the invitation. She came up to his desk and leaned over it. "Look here," she said, "you're the man, aren't you, who came messing round my grandfather's jewellery shop a few weeks ago? You were after the assistant--Edward Levy." "Well?" Brodie ejaculated eagerly. "You bungled things, or else he was too clever for you," Rosa continued. "I've come to tell you that he's back again there now, carrying on the same game, got an electrical dynamo in the workshop, and no end of tools. His name ain't Levy at all, and he isn't a Jew." "What do you suppose he is doing there?" Brodie enquired. "Look here," the girl went on, "if I tell you, will you swear that you won't get my grandfather into this?" "I think I can promise that," was the cautious reply. "Breaking up diamonds, then--that's what he's doing," the girl confided. "He's at it now." Mr. Brodie showed no signs of excitement, but he was already struggling into his overcoat. "There will probably be a reward for this," he said to Rosa. "I shall not forget." "I don't want your reward," the girl replied. "I've done it just because--well, never mind. You go and nab him...." Brodie did not suffer the grass to grow beneath his feet. He drove straight to Scotland Yard, and chafed very much at the delay which kept him five minutes from Inspector Ditchwater's presence. "Inspector," he announced, as soon as he was ushered into the latter's room, "I want you to give me a man and a warrant at once. This time I think I've got a clue that will lead us straight to Jerry Sands." "Is that so?" the inspector remarked dryly. "We've been there before, you know." "See here, Ditchwater," Brodie continued, "you've kind of lost faith in me, and I can't say that I'm altogether surprised. But just listen. The girl from Abraham Letchowiski's shop has been up to me to-day. She says that that fellow I went after is back again there. He's got a dynamo in the back place and a whole set of tools, and is breaking up diamonds. Just what I suspected before, only I couldn't lay my hands on him. This time we shall do it." The inspector scribbled a few lines on a piece of paper.