“I thank you,” said the young man, rising and pulling on his overcoat. “You have given me fresh life and hope. I shall certainly do as you advise.”

“Do not lose an instant. And, above all, take care of yourself in the meanwhile, for I do not think that there can be a doubt that you are threatened by a very real and imminent danger. How do you go back?”

“By train from Waterloo[51].”

“It is not yet nine. The streets will be crowded, so I trust that you may be in safety. And yet you cannot guard yourself too closely.”

“I am armed.”

“That is well. To-morrow I shall set to work upon your case.”

“I shall see you at Horsham, then?”

“No, your secret lies in London. It is there that I shall seek it.”

“Then I shall call upon you in a day, or in two days, with news as to the box and the papers. I shall take your advice in every particular.” He shook hands with us and took his leave. Outside the wind still screamed and the rain splashed and pattered against the windows. This strange, wild story seemed to have come to us from amid the mad elements – blown in upon us like a sheet of sea-weed in a gale – and now to have been reabsorbed by them once more.

Sherlock Holmes sat for some time in silence, with his head sunk forward and his eyes bent upon the red glow of the fire. Then he lit his pipe, and leaning back in his chair he watched the blue smoke-rings as they chased each other up to the ceiling.

“I think, Watson,” he remarked at last, “that of all our cases we have had none more fantastic than this.”

“Save, perhaps, the Sign of Four.”

“Well, yes. Save, perhaps, that. And yet this John Openshaw seems to me to be walking amid even greater perils than did the Sholtos.”

“But have you,” I asked, “formed any definite conception as to what these perils are?”

“There can be no question as to their nature,” he answered.

“Then what are they? Who is this K. K. K., and why does he pursue this unhappy family?”

Sherlock Holmes closed his eyes and placed his elbows upon the arms of his chair, with his finger-tips together. “The ideal reasoner,” he remarked, “would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which led up to it but also all the results which would follow from it. As Cuvier[52] could correctly describe a whole animal by the contemplation of a single bone, so the observer who has thoroughly understood one link in a series of incidents should be able to accurately state all the other ones, both before and after. We have not yet grasped the results which the reason alone can attain to. Problems may be solved in the study which have baffled all those who have sought a solution by the aid of their senses. To carry the art, however, to its highest pitch, it is necessary that the reasoner should be able to utilize all the facts which have come to his knowledge; and this in itself implies, as you will readily see, a possession of all knowledge, which, even in these days of free education and encyclopaedias, is a somewhat rare accomplishment. It is not so impossible, however, that a man should possess all knowledge which is likely to be useful to him in his work, and this I have endeavoured in my case to do. If I remember rightly, you on one occasion, in the early days of our friendship, defined my limits in a very precise fashion.”

“Yes,” I answered, laughing. “It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mud-stains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin-player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco. Those, I think, were the main points of my analysis.”

Holmes grinned at the last item. “Well,” he said, “I say now, as I said then, that a man should keep his little brain-attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it. Now, for such a case as the one which has been submitted to us to-night, we need certainly to muster all our resources. Kindly hand me down the letter K of the American Encyclopaedia which stands upon the shelf beside you. Thank you. Now let us consider the situation and see what may be deduced from it. In the first place, we may start with a strong presumption that Colonel Openshaw had some very strong reason for leaving America. Men at his time of life do not change all their habits and exchange willingly the charming climate of Florida for the lonely life of an English provincial town. His extreme love of solitude in England suggests the idea that he was in fear of someone or something, so we may assume as a working hypothesis that it was fear of someone or something which drove him from America. As to what it was he feared, we can only deduce that by considering the formidable letters which were received by himself and his successors. Did you remark the postmarks of those letters?”

“The first was from Pondicherry, the second from Dundee, and the third from London.”

“From East London. What do you deduce from that?”

“They are all seaports. That the writer was on board of a ship.”

“Excellent. We have already a clue. There can be no doubt that the probability – the strong probability – is that the writer was on board of a ship. And now let us consider another point. In the case of Pondicherry, seven weeks elapsed between the threat and its fulfillment, in Dundee it was only some three or four days. Does that suggest anything?”

“A greater distance to travel.”

“But the letter had also a greater distance to come.”

“Then I do not see the point.”

“There is at least a presumption that the vessel in which the man or men are is a sailing-ship. It looks as if they always sent their singular warning or token before them when starting upon their mission. You see how quickly the deed followed the sign when it came from Dundee. If they had come from Pondicherry in a steamer they would have arrived almost as soon as their letter. But, as a matter of fact, seven weeks elapsed. I think that those seven weeks represented the difference between the mail-boat which brought the letter and the sailing vessel which brought the writer.”

“It is possible.”

“More than that. It is probable. And now you see the deadly urgency of this new case, and why I urged young Openshaw to caution. The blow has always fallen at the end of the time which it would take the senders to travel the distance. But this one comes from London, and therefore we cannot count upon delay.”

“Good God!” I cried. “What can it mean, this relentless persecution?”

“The papers which Openshaw carried are obviously of vital importance to the person or persons in the sailing-ship. I think that it is quite clear that there must be more than one of them. A single man could not have carried out two deaths in such a way as to deceive a coroner’s jury. There must have been several in it, and they must have been men of resource and determination. Their papers they mean to have, be the holder of them who it may. In this way you see K. K. K. ceases to be the initials of an individual and becomes the badge of a society.”

“But of what society?”

“Have you never – ” said Sherlock Holmes, bending forward and sinking his voice – “have you never heard of the Ku Klux Klan?”

“I never have.”

Holmes turned over the leaves of the book upon his knee. “Here it is,” said he presently:

“Ku Klux Klan. A name derived from the fanciful resemblance to the sound produced by cocking a rifle. This terrible secret society was formed by some ex-Confederate soldiers in the Southern states after the Civil War, and it rapidly formed local branches in different parts of the country, notably in Tennessee, Louisiana, the Carolinas, Georgia, and Florida. Its power was used for political purposes, principally for the terrorizing of the negro voters and the murdering and driving from the country of those who were opposed to its views. Its outrages were usually preceded by a warning sent to the marked man in some fantastic but generally recognized shape – a sprig of oak-leaves in some parts, melon seeds or orange pips in others. On receiving this the victim might either openly abjure his former ways, or might fly from the country. If he braved the matter out, death would unfailingly come upon him, and usually in some strange and unforeseen manner. So perfect was the organization of the society, upon record where any man succeeded in braving it with impunity, or in which any of its outrages were traced home to the perpetrators. For some years the organization flourished in spite of the efforts of the United States government and of the better classes of the community in the South. Eventually, in the year 1869, the movement rather suddenly collapsed, although there have been sporadic outbreaks of the same sort since that date.