"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.