'But I have told you a good deal; yes, and shown you a good deal; you have heard pretty nearly all that I have heard, and seen what I have seen; or at least,' and his voice chilled as he spoke, 'enough to make a good deal clear as noonday. The servants told you, I have no doubt, that the wretched boy Cradock had another seizure the night before last; he awoke me with cries in that voice you heard in the garden, and I went to him, and God forbid you should see what I saw that night. But all this is useless; my time here is drawing to a close; I must be back in town in three weeks, as I have a course of lectures to prepare, and need all my books about me. In a very few days it will be all over, and I shall no longer hint, and no longer be liable to ridicule as a madman and a quack. No, I shall speak plainly, and I shall be heard with such emotions as perhaps no other man has ever drawn from the breasts of his fellows.'

He paused, and seemed to grow radiant with the joy of great and wonderful discovery.

'But all that is for the future, the near future certainly, but still the future,' he went on at length. 'There is something to be done yet; you will remember my telling you that my researches were not altogether devoid of peril? Yes, there, is a certain amount of danger to be faced; I did not know how much when I spoke on the subject before, and to a certain extent I am still in the dark. But it will be a strange adventure, the last of all, the last demonstration in the chain.'

He was walking up and down the room as he spoke, and I could hear in his voice the contending tones of exultation and despondence, or perhaps I should say awe, the awe of a man who goes forth on unknown waters, and I thought of his allusion to Columbus on the night he had laid his book before me. The evening was a little chilly, and a fire of logs had been lighted in the study where we were; the remittent flame and the glow on the walls reminded me of the old days. I was sitting silent in an armchair by the fire, wondering over all I had heard, and still vainly speculating as to the secret springs concealed from me under all the phantasmagoria I had witnessed, when I became suddenly aware of a sensation that change of some sort had been at work in the room, and that there was something unfamiliar in its aspect. For some time I looked about me, trying in vain to localize the alteration that I knew had been made; the table by the window, the chairs, the faded settee were all as I had known them. Suddenly, as a sought-for recollection flashes into the mind, I knew what was amiss. I was facing the professor's desk, which stood on the other side of the fire, and above the desk was a grimy-looking bust of Pitt, that I had never seen there before. And then I remembered the true position of this work of art; in the furthest corner by the door was an old cupboard, projecting into the room, and on the top of the cupboard, fifteen feet from the floor, the bust had been, and there, no doubt, it had delayed, accumulating dirt, since the early days of the century.

I was utterly amazed, and sat silent, still in a confusion of thought. There was, so far as I knew, no such thing as a stepladder in the house, for I had asked for one to make some alteration in the curtains of my room, and a tall man standing on a chair would have found it impossible to take down the bust. It had been placed, not on the edge of the cupboard, but far back against the wall; and Professor Gregg was, if anything, under the average height.

'How on earth did you manage to get down Pitt?' I said at last.

The professor looked curiously at me, and seemed to hesitate a little.

'They must have found you a stepladder, or perhaps the gardener brought in a short ladder from outside?'

'No, I have had no ladder of any kind. Now, Miss Lally,' he went on with an awkward simulation of jest, 'there is a little puzzle for you; a problem in the manner of the inimitable Holmes; there are the facts, plain and patent: summon your acuteness to the solution of the puzzle. For Heaven's sake,' he cried with a breaking voice, 'say no more about it! I tell you, I never touched the thing,' and he went out of the room with horror manifest on his face, and his hand shook and jarred the door behind him.

I looked round the room in vague surprise, not at all realizing what had happened, making vain and idle surmises by way of explanation, and wondering at the stirring of black waters by an idle word and the trivial change of an ornament. 'This is some petty business, some whim on which I have jarred.' I reflected; 'the professor is perhaps scrupulous and superstitious over trifles, and my question may have outraged unacknowledged fears, as though one killed a spider or spilled the salt before the very eyes of a practical Scotchwoman.' I was immersed in these fond suspicions, and began to plume myself a little on my immunity from such empty fears, when the truth fell heavily as lead upon my heart, and I recognized with cold terror that some awful influence had been at work. The bust was simply inaccessible; without a ladder no one could have touched it.

I went out to the kitchen and spoke as quietly as I could to the housemaid.

'Who moved that bust from the top of the cupboard, Anne?' I said to her. 'Professor Gregg says he has not touched it. Did you find an old stepladder in one of the outhouses?'

The girl looked at me blankly.

'I never touched it,' she said. 'I found it where it is now the other morning when I dusted the room. I remember now, it was Wednesday morning, because it was the morning after Cradock was taken bad in the night. My room is next to his, you know, miss,' the girl went on piteously, 'and it was awful to hear how he cried and called out names that I couldn't understand. It made me feel all afraid; and then master came, and I heard him speak, and he took down Cradock to the study and gave him something.'

'And you found that bust moved the next morning?'

'Yes, miss. There was a queer sort of smell in the study when I came down and opened the windows; a bad smell it was, and I wondered what it could be. Do you know, miss, I went a long time ago to the Zoo in London with my cousin Thomas Barker, one afternoon that I had off, when I was at Mrs. Prince's in Stanhope Gate, and we went into the snake-house to see the snakes, and it was just the same sort of smell; very sick it made me feel, I remember, and I got Barker to take me out. And it was just the same kind of smell in the study, as I was saying, and I was wondering what it could be from, when I see that bust with Pitt cut in it, standing on the master's desk, and I thought to myself, 'Now who has done that, and how have they done it'?' And when I came to dust the things, I looked at the bust, and I saw a great mark on it where the dust was gone, for I don't think it can have been touched with a duster for years and years, and it wasn't like finger-marks, but a large patch like, broad and spread out. So I passed my hand over it, without thinking what I was doing, and where that patch was it was all sticky and slimy, as if a snail had crawled over it. Very strange, isn't it, miss? and I wonder who can have done it, and how that mess was made.'

The well-meant gabble of the servant touched me to the quick; I lay down upon my bed, and bit my lip that I should not cry out loud in the sharp anguish of my terror and bewilderment. Indeed, I was almost mad with dread; I believe that if it had been daylight I should have fled hot foot, forgetting all courage and all the debt of gratitude that was due to Professor Gregg, not caring whether my fate were that I must starve slowly, so long as I might escape from the net of blind and panic fear that every day seemed to draw a little closer round me. If I knew, I thought, if I knew what there was to dread, I could guard against it; but here, in this lonely house, shut in on all sides by the olden woods and the vaulted hills, terror seems to spring inconsequent from every covert, and the flesh is aghast at the half-hearted murmurs of horrible things. All in vain I strove to summon scepticism to my aid, and endeavoured by cool common sense to buttress my belief in a world of natural order, for the air that blew in at the open window was a mystic breath, and in the darkness I felt the silence go heavy and sorrowful as a mass of requiem, and I conjured images of strange shapes gathering fast amidst the reeds, beside the wash of the river.

In the morning from the moment that I set foot in the breakfast-room, I felt that the unknown plot was drawing to a crisis; the professor's face was firm and set, and he seemed hardly to hear our voices when we spoke.

'I am going out for a rather long walk,' he said, when the meal was over.