Then he had been sent away to school, which was so much death to him. He refused to go to Oxford, choosing a German university. He had spent a certain time at Bonn, at Berlin, and at Frankfurt. There, a curiosity had been aroused in his mind. He wanted to see and to know, in a curious objective fashion, as if it were an amusement to him. Then he must try war. Then he must travel into the savage regions that had so attracted him.

The result was, he found humanity very much alike everywhere, and to a mind like his, curious and cold, the savage was duller, less exciting than the European. So he took hold of all kinds of sociological ideas, and ideas of reform. But they never went more than skin–deep, they were never more than a mental amusement. Their interest lay chiefly in the reaction against the positive order, the destructive reaction.

He discovered at last a real adventure in the coal–mines. His father asked him to help in the firm. Gerald had been educated in the science of mining, and it had never interested him. Now, suddenly, with a sort of exultation, he laid hold of the world.

There was impressed photographically on his consciousness the great industry. Suddenly, it was real, he was part of it. Down the valley ran the colliery railway, linking mine with mine. Down the the railway ran the trains, short trains of heavily laden trucks, long trains of empty wagons, each one bearing in big white letters the initials:

‘C.B.&Co.’

These white letters on all the wagons he had seen since his first childhood, and it was as if he had never seen them, they were so familiar, and so ignored. Now at last he saw his own name written on the wall. Now he had a vision of power.

So many wagons, bearing his initial, running all over the country. He saw them as he entered London in the train, he saw them at Dover. So far his power ramified. He looked at Beldover, at Selby, at Whatmore, at Lethley Bank, the great colliery villages which depended entirely on his mines. They were hideous and sordid, during his childhood they had been sores in his consciousness. And now he saw them with pride. Four raw new towns, and many ugly industrial hamlets were crowded under his dependence. He saw the stream of miners flowing along the causeways from the mines at the end of the afternoon, thousands of blackened, slightly distorted human beings with red mouths, all moving subjugate to his will. He pushed slowly in his motor–car through the little market–top on Friday nights in Beldover, through a solid mass of human beings that were making their purchases and doing their weekly spending. They were all subordinate to him. They were ugly and uncouth, but they were his instruments. He was the God of the machine. They made way for his motor–car automatically, slowly.

He did not care whether they made way with alacrity, or grudgingly. He did not care what they thought of him. His vision had suddenly crystallised. Suddenly he had conceived the pure instrumentality of mankind. There had been so much humanitarianism, so much talk of sufferings and feelings. It was ridiculous. The sufferings and feelings of individuals did not matter in the least. They were mere conditions, like the weather. What mattered was the pure instrumentality of the individual. As a man as of a knife: does it cut well? Nothing else mattered.

“This was the first point gained. I then walked slowly down the garden path, which happened to be composed of a clay soil, peculiarly suitable for taking impressions. No doubt it appeared to you to be a mere trampled line of slush, but to my trained eyes every mark upon its surface had a meaning. There is no branch of detective science which is so important and so much neglected as the art of tracing footsteps. Happily, I have always laid great stress upon it, and much practice has made it second nature to me. I saw the heavy footmarks of the constables, but I saw also the track of the two men who had first passed through the garden. It was easy to tell that they had been before the others, because in places their marks had been entirely obliterated by the others coming upon the top of them. In this way my second link was formed, which told me that the nocturnal visitors were two in number, one remarkable for his height (as I calculated from the length of his stride), and the other fashionably dressed, to judge from the small and elegant impression left by his boots.

“On entering the house this last inference was confirmed. My well-booted man lay before me. The tall one, then, had done the murder, if murder there was. There was no wound upon the dead man’s person, but the agitated expression upon his face assured me that he had foreseen his fate before it came upon him. Men who die from heart disease, or any sudden natural cause, never by any chance exhibit agitation upon their features. Having sniffed the dead man’s lips, I detected a slightly sour smell, and I came to the conclusion that he had had poison forced upon him. Again, I argued that it had been forced upon him from the hatred and fear expressed upon his face. By the method of exclusion, I had arrived at this result, for no other hypothesis would meet the facts. Do not imagine that it was a very unheard-of idea. The forcible administration of poison is by no means a new thing in criminal annals. The cases of Dolsky in Odessa, and of Leturier in Montpellier, will occur at once to any toxicologist.

“And now came the great question as to the reason why. Robbery had not been the object of the murder, for nothing was taken. Was it politics, then, or was it a woman? That was the question which confronted me. I was inclined from the first to the latter supposition. Political assassins are only too glad to do their work and to fly. This murder had, on the contrary, been done most deliberately, and the perpetrator had left his tracks all over the room, showing that he had been there all the time. It must have been a private wrong, and not a political one, which called for such a methodical revenge. When the inscription was discovered upon the wall, I was more inclined than ever to my opinion. The thing was too evidently a blind. When the ring was found, however, it settled the question. Clearly the murderer had used it to remind his victim of some dead or absent woman. It was at this point that I asked Gregson whether he had inquired in his telegram to Cleveland as to any particular point in Mr. Drebber’s former career. He answered, you remember, in the negative.