"Well, Brett," he said, "what's the report? As a matter of fact, Samuel is my client, as I shall explain presently. I don't like spying on a client, as a rule, but I was convinced that he was keeping something back from me, and there was something odd about his whole story. But what did you see?" I told Hewitt the tale of my pursuit as I have told it here. "I came away," I concluded, "after it seemed that he was settled in his office for a bit. But there is another thing you should know. When he first came out with you I recognised him at once as a man I had seen at that same door a little after two o'clock--say a quarter past." "Yes?" answered Hewitt. "I saw him there myself a little sooner--something like two, I should say. What was he doing?" "Well," I replied, "he was doing pretty well what he did in Manchester Square. For as a matter of fact the brougham also was here then--just outside the next-door office. I think I might swear to that same brougham--though of course I didn't notice it so particularly that first time." Hewitt whistled. "Oh!" he said. "Tell me about this. Did he get into the brougham this time?" "Yes. He came out of the office door with a black leather case in his hand and a very scared look on his face. And he popped into the brougham, leather case, scared look and all." "Ho--ho!" said Hewitt, thoughtfully, and whistled again. "A black leather case, eh! Come, come, the plot thickens. And what happened? Did the carriage go off?" "No; I saw nothing more--shouldn't have noticed so much, in fact, if the whole thing hadn't looked a trifle curious. Nervous, pallid Jew with a black case--as though he thought it was dynamite and might go off at any moment--closed brougham, blinds drawn, Jew skipped in and banged the door, but brougham didn't move; and I fancied--perhaps only fancied--that I saw a woman's black veil inside. But then I turned in here and saw no more." Hewitt sat thoughtfully silent for a few moments. Then he rose and said, "Come next door, and I'll tell you how we stand. The housekeeper will let us in, and we'll see if you can identify that black case anywhere." It seemed that Hewitt had by this established a good understanding with the housekeeper next door. "Nobody's been, sir," the man said, as he admitted us and closed the heavy doors. "Office boy not come back, nor nothing." We went up to Denson's office on the third floor, the door of which the housekeeper opened; and having turned on the electric light, he left us. "Now, is that anything like the case?" Hewitt asked, when the housekeeper was gone; and he lifted from under the table the very black case I had seen Samuel take into the brougham. I said that I felt as sure of the case as of the brougham. And then Hewitt told me the whole tale of Samuel and his loss of fifteen thousand pounds' worth of diamonds, just as it appears earlier in this narrative.