"And it did, though they hardly found upon the mud-bank what they had feared to find. It was Neville St. Clair's coat, and not Neville St. Clair, which lay uncovered as the tide receded. And what do you think they found in the pockets?"

"I cannot imagine."

"No, I don't think you would guess. Every pocket stuffed with pennies and half-pennies–421 pennies and 270 half-pennies. It was no wonder that it had not been swept away by the tide. But a human body is a different matter. There is a fierce eddy between the wharf and the house. It seemed likely enough that the weighted coat had remained when the stripped body had been sucked away into the river."

"But I understand that all the other clothes were found in the room. Would the body be dressed in a coat alone?"

"No, sir, but the facts might be met speciously enough. Suppose that this man Boone had thrust Neville St. Clair through the window, there is no human eye which could have seen the deed. What would he do then? It would of course instantly strike him that he must get rid of the tell-tale garments. He would seize the coat, then, and be in the act of throwing it out, when it would occur to him that it would swim and not sink. He has little time, for he has heard the scuffle downstairs when the wife tried to force her way up, and perhaps he has already heard from his Lascar confederate that the police are hurrying up the street. There is not an instant to be lost. He rushes to some secret hoard, where he has accumulated the fruits of his beggary, and he stuffs all the coins upon which he can lay his hands into the pockets to make sure of the coat's sinking. He throws it out, and would have done the same with the other garments had not he heard the rush of steps below, and only just had time to close the window when the police appeared."

"It certainly sounds feasible."

"Well, we will take it as a working hypothesis for want of a better. Boone, as I have told you, was arrested and taken to the station, but it could not be shown that there had ever before been anything against him. He had for years been known as a professional beggar, but his life appeared to have been a very quiet and innocent one. There the matter stands at present, and the questions which have to be solved–what Neville St. Clair was doing in the opium den, what happened to him when there, where is he now, and what Hugh Boone had to do with his disappearance–are all as far from a solution as ever. I confess that I cannot recall any case within my experience which looked at the first glance so simple and yet which presented such difficulties."

While Sherlock Holmes had been detailing this singular series of events, we had been whirling through the outskirts of the great town until the last straggling houses had been left behind, and we rattled along with a country hedge upon either side of us. Just as he finished, however, we drove through two scattered villages, where a few lights still glimmered in the windows.