He got up, unfolding himself to his full height, and with a heaviness of step remarkable in so slender a man, moved across the room to the window. The panes streamed with rain, and the short street he looked down into lay wet and empty, as if swept clear suddenly by a great flood. It was a very trying day, choked in raw fog to begin with, and now drowned in cold rain. The flickering, blurred flames of gas-lamps seemed to be dissolving in a watery atmosphere. And the lofty pretensions of a mankind oppressed by the miserable indignities of the weather appeared as a colossal and hopeless vanity deserving of scorn, wonder, and compassion. “Horrible, horrible!” thought the Assistant Commissioner to himself, with his face near the window-pane. “We have been having this sort of thing now for ten days; no, a fortnight—a fortnight.” He ceased to think completely for a time. That utter stillness of his brain lasted about three seconds. Then he said perfunctorily: “You have set inquiries on foot for tracing that other man up and down the line?” He had no doubt that everything needful had been done. Chief Inspector Heat knew, of course, thoroughly the business of man-hunting. And these were the routine steps, too, that would be taken as a matter of course by the merest beginner. A few inquiries amongst the ticket collectors and the porters of the two small railway stations would give additional details as to the appearance of the two men; the inspection of the collected tickets would show at once where they came from that morning. It was elementary, and could not have been neglected. Accordingly the Chief Inspector answered that all this had been done directly the old woman had come forward with her deposition. And he mentioned the name of a station. “That’s where they came from, sir,” he went on. “The porter who took the tickets at Maze Hill remembers two chaps answering to the description passing the barrier. They seemed to him two respectable working men of a superior sort—sign painters or house decorators. The big man got out of a third-class compartment backward, with a bright tin can in his hand. On the platform he gave it to carry to the fair young fellow who followed him. All this agrees exactly with what the old woman told the police sergeant in Greenwich.” The Assistant Commissioner, still with his face turned to the window, expressed his doubt as to these two men having had anything to do with the outrage. All this theory rested upon the utterances of an old charwoman who had been nearly knocked down by a man in a hurry. Not a very substantial authority indeed, unless on the ground of sudden inspiration, which was hardly tenable.