‘No,’ said Hammond. ‘It’s wrong. You, for example, May, you squander half your force with women. You’ll never really do what you should do, with a fine mind such as yours. Too much of it goes the other way.’

‘Maybe it does...and too little of you goes that way, Hammond, my boy, married or not. You can keep the purity and integrity of your mind, but it’s going damned dry. Your pure mind is going as dry as fiddlesticks, from what I see of it. You’re simply talking it down.’

Tommy Dukes burst into a laugh.

‘Go it, you two minds!’ he said. ‘Look at me...I don’t do any high and pure mental work, nothing but jot down a few ideas. And yet I neither marry nor run after women. I think Charlie’s quite right; if he wants to run after the women, he’s quite free not to run too often. But I wouldn’t prohibit him from running. As for Hammond, he’s got a property instinct, so naturally the straight road and the narrow gate are right for him. You’ll see he’ll be an English Man of Letters before he’s done. A.B.C. from top to toe. Then there’s me. I’m nothing. Just a squib. And what about you, Clifford? Do you think sex is a dynamo to help a man on to success in the world?’

Clifford rarely talked much at these times. He never held forth; his ideas were really not vital enough for it, he was too confused and emotional. Now Now he blushed and looked uncomfortable.

‘Well!’ he said, ‘being myself HORS DE COMBAT, I don’t see I’ve anything to say on the matter.’

‘Not at all,’ said Dukes; ‘the top of you’s by no means HORS DE COMBAT. You’ve got the life of the mind sound and intact. So let us hear your ideas.’

‘Well,’ stammered Clifford, ‘even then I don’t suppose I have much idea...I suppose marry–and–have–done–with–it would pretty well stand for what I think. Though of course between a man and woman who care for one another, it is a great thing.’

‘What sort of great thing?’ said Tommy.

‘Oh...it perfects the intimacy,’ said Clifford, uneasy as a woman in such talk.

‘Well, Charlie and I believe that sex is a sort of communication like speech. Let any woman start a sex conversation with me, and it’s natural for me to go to bed with her to finish it, all in due season. Unfortunately no woman makes any particular start with me, so I go to bed by myself; and am none the worse for it...I hope so, anyway, for how should I know? Anyhow I’ve no starry calculations to be interfered with, and no immortal works to write. I’m merely a fellow skulking in the army...’

Silence fell. The four men smoked. And Connie sat there and put another stitch in her sewing...Yes, she sat there! She had to sit mum. She had to be quiet as a mouse, not to interfere with the immensely important speculations of these highly–mental gentlemen. But she had to be there. They didn’t get on so well without her; their ideas didn’t flow so freely. Clifford was much more hedgy and nervous, he got cold feet much quicker in Connie’s absence, and the talk didn’t run. Tommy Dukes came off best; he was a little inspired by her presence. Hammond she didn’t really like; he seemed so selfish in a mental way. And Charles May, though she liked something about him, seemed a little distasteful and messy, in spite of his stars.

“If, then, Mortimer Tregennis disappeared from the scene, and yet some outside person affected the card-players, how can we reconstruct that person, and how was such an impression of horror conveyed? Mrs. Porter may be eliminated. She is evidently harmless. Is there any evidence that someone crept up to the garden window and in some manner produced so terrific an effect that he drove those who saw it out of their senses? The only suggestion in this direction comes from Mortimer Tregennis himself, who says that his brother spoke about some movement in the garden. That is certainly remarkable, as the night was rainy, cloudy, and dark. Anyone who had the design to alarm these people would be compelled to place his very face against the glass before he could be seen. There is a three-foot flower-border outside this window, but no indication of a footmark. It is difficult to imagine, then, how an outsider could have made so terrible an impression upon the company, nor have we found any possible motive for so strange and elaborate an attempt. You perceive our difficulties, Watson?”

“They are only too clear,” I answered with conviction.

“And yet, with a little more material, we may prove that they are not insurmountable,” said Holmes. “I fancy that among your extensive archives, Watson, you may find some which were nearly as obscure. Meanwhile, we shall put the case aside until more accurate data are available, and devote the rest of our morning to the pursuit of neolithic man.”

I may have commented upon my friend’s power of mental detachment, but never have I wondered at it more than upon that spring morning in Cornwall when for two hours he discoursed upon Celts, arrowheads, and shards, as lightly as if no sinister mystery were waiting for his solution. It was not until we had returned in the afternoon to our cottage that we found a visitor awaiting us, who soon brought our minds back to the matter in hand. Neither of us needed to be told who that visitor was. The huge body, the craggy and deeply seamed face with the fierce eyes and hawk-like nose, the grizzled hair which nearly brushed our cottage ceiling, the beard — golden at the fringes and white near the lips, save for the nicotin stain from his perpetual cigar — all these were as well known in London as in Africa, and could only be associated with the tremendous personality of Dr. Leon Sterndale, the great lion-hunter and explorer.

We had heard of his presence in the district and had once or twice caught sight of his tall figure upon the moorland paths. He made no advances to us, however, nor would we have dreamed of doing so to him, as it was well known that it was his love of seclusion which caused him to spend the greater part of the intervals between his journeys in a small bungalow buried in the lonely wood of Beauchamp Arriance. Here, amid his books and his maps, he lived an absolutely lonely life, attending to his own simple wants and paying little apparent heed to the affairs of his neighbours. It was a surprise to me, therefore, to hear him asking Holmes in an eager voice whether he had made any advance in his reconstruction of this mysterious episode. “The county police are utterly at fault,” said he, “but perhaps your wider experience has suggested some conceivable explanation. My only claim to being taken into your confidence is that during my many residences here I have come to know this family of Tregennis very well — indeed, upon my Cornish mother’s side I could call them cousins — and their strange fate has naturally been a great shock to me. I may tell you that I had got as far as Plymouth upon my way to Africa, but the news reached me this morning, and I came straight back again to help in the inquiry.”