'There is just one that has been taking shape vaguely in my mind. I've been told that your brother reviewed a book very severely not long before he died, and just lately I have happened to cross the path of the man who wrote that book in a way he would resent.'

'Don't tell me the man was called Karswell.'

'Why not? that is exactly his name.'

Henry Harrington leant back. 'That is final to my mind. Now I must explain further. From something he said, I feel sure that my brother John was beginning to believe—very much against his will—that Karswell was at the bottom of his trouble. I want to tell you what seems to me to have a bearing on the situation. My brother was a great musician, and used to run up to concerts in town. He came back, three months before he died, from one of these, and gave me his programme to look at—an analytical programme: he always kept them. "I nearly missed this one," he said. "I suppose I must have dropped it: anyhow, I was looking for it under my seat and in my pockets and so on, and my neighbour offered me his; said 'might he give it me, he had no further use for it,' and he went away just afterwards. I don't know who he was—a stout, clean-shaven man. I should have been sorry to miss it; of course I could have bought another, but this cost me nothing." At another time he told me that he had been very uncomfortable both on the way to his hotel and during the night. I piece things together now in thinking it over. Then, not very long after, he was going over these programmes, putting them in order to have them bound up, and in this particular one (which by the way I had hardly glanced at), he found quite near the beginning a strip of paper with some very odd writing on it in red and black—most carefully done—it looked to me more like Runic letters than anything else. "Why," he said, "this must belong to my fat neighbour. It looks as if it might be worth returning to him; it may be a copy of something; evidently someone has taken trouble over it. How can I find his address?" We talked it over for a little and agreed that it wasn't worth advertising about, and that my brother had better look out for the man at the next concert, to which he was going very soon. The paper was lying on the book and we were both by the fire; it was a cold, windy summer evening. I suppose the door blew open, though I didn't notice it: at any rate a gust—a warm gust it was—came quite suddenly between us, took the paper and blew it straight into the fire: it was light, thin paper, and flared and went up the chimney in a single ash. "Well," I said, "you can't give it back now." He said nothing for a minute: then rather crossly, "No, I can't; but why you should keep on saying so I don't know." I remarked that I didn't say it more than once. "Not more than four times, you mean," was all he said. I remember all that very clearly, without any good reason; and now to come to the point. I don't know if you looked at that book of Karswell's which my unfortunate brother reviewed. It's not likely that you should: but I did, both before his death and after it. The first time we made game of it together. It was written in no style at all—split infinitives, and every sort of thing that makes an Oxford gorge rise. Then there was nothing that the man didn't swallow: mixing up classical myths, and stories out of the Golden Legend with reports of savage customs of today—all very proper, no doubt, if you know how to use them, but he didn't: he seemed to put the Golden Legend and the Golden Bough exactly on a par, and to believe both: a pitiable exhibition, in short. Well, after the misfortune, I looked over the book again. It was no better than before, but the impression which it left this time on my mind was different. I suspected—as I told you—that Karswell had borne ill-will to my brother, even that he was in some way responsible for what had happened; and now his book seemed to me to be a very sinister performance indeed. One chapter in particular struck me, in which he spoke of "casting the Runes" on people, either for the purpose of gaining their affection or of getting them out of the way—perhaps more especially the latter: he spoke of all this in a way that really seemed to me to imply actual knowledge. I've not time to go into details, but the upshot is that I am pretty sure from information received that the civil man at the concert was Karswell: I suspect—I more than suspect—that the paper was of importance: and I do believe that if my brother had been able to give it back, he might have been alive now. Therefore, it occurs to me to ask you whether you have anything to put beside what I have told you.'

By way of answer, Dunning had the episode in the Manuscript Room at the British Museum to relate. 'Then he did actually hand you some papers; have you examined them? No? because we must, if you'll allow it, look at them at once, and very carefully.'

They went to the still empty house—empty, for the two servants were not yet able to return to work. Dunning's portfolio of papers was gathering dust on the writing-table. In it were the quires of small-sized scribbling paper which he used for his transcripts: and from one of these, as he took it up, there slipped and fluttered out into the room with uncanny quickness, a strip of thin light paper. The window was open, but Harrington slammed it to, just in time to intercept the paper, which he caught. 'I thought so,' he said; 'it might be the identical thing that was given to my brother. You'll have to look out, Dunning; this may mean something quite serious for you.'

A long consultation took place. The paper was narrowly examined. As Harrington had said, the characters on it were more like Runes than anything else, but not decipherable by either man, and both hesitated to copy them, for fear, as they confessed, of perpetuating whatever evil purpose they might conceal. So it has remained impossible (if I may anticipate a little) to ascertain what was conveyed in this curious message or commission. Both Dunning and Harrington are firmly convinced that it had the effect of bringing its possessors into very undesirable company. That it must be returned to the source whence it came they were agreed, and further, that the only safe and certain way was that of personal service; and here contrivance would be necessary, for Dunning was known by sight to Karswell. He must, for one thing, alter his appearance by shaving his beard. But then might not the blow fall first? Harrington thought they could time it. He knew the date of the concert at which the 'black spot' had been put on his brother: it was June 18th. The death had followed on Sept. 18th. Dunning reminded him that three months had been mentioned on the inscription on the car-window. 'Perhaps,' he added, with a cheerless laugh, 'mine may be a bill at three months too. I believe I can fix it by my diary. Yes, April 23rd was the day at the Museum; that brings us to July 23rd. Now, you know, it becomes extremely important to me to know anything you will tell me about the progress of your brother's trouble, if it is possible for you to speak of it.' 'Of course. Well, the sense of being watched whenever he was alone was the most distressing thing to him. After a time I took to sleeping in his room, and he was the better for that: still, he talked a great deal in his sleep. What about? Is it wise to dwell on that, at least before things are straightened out? I think not, but I can tell you this: two things came for him by post during those weeks, both with a London postmark, and addressed in a commercial hand. One was a woodcut of Bewick's, roughly torn out of the page: one which shows a moonlit road and a man walking along it, followed by an awful demon creature. Under it were written the lines out of the "Ancient Mariner" (which I suppose the cut illustrates) about one who, having once looked round—

walks on,
And turns no more his head,
Because he knows a frightful fiend
Doth close behind him tread.

The other was a calendar, such as tradesmen often send. My brother paid no attention to this, but I looked at it after his death, and found that everything after Sept. 18 had been torn out. You may be surprised at his having gone out alone the evening he was killed, but the fact is that during the last ten days or so of his life he had been quite free from the sense of being followed or watched.'

The end of the consultation was this. Harrington, who knew a neighbour of Karswell's, thought he saw a way of keeping a watch on his movements. It would be Dunning's part to be in readiness to try to cross Karswell's path at any moment, to keep the paper safe and in a place of ready access.