“I did not begin undressing at once, but sat down and tried to piece together some theory to account for the uncanniness of things. But the more I thought, the more perplexing it became. There was no doubt whatever that I had put my hand on something extremely alive and extremely unpleasant the night before. The bare recollection of it made me shudder. What living thing could possibly be creeping about the house in the dark? It was a man’s hand. Of that I was certain from the size of it. George Carson was out of the question, for he was in his room all the time. Nor was it likely that Mr. Carson, senior, would steal about his own house in his socks and refuse to answer when spoken to. The only other man in the house was an eminently respectable-looking butler; and his hand, as I had noted particularly when he poured out my wine at dinner, was plump and soft, whereas the mysterious hand on the balustrade was thin and bony. And then, what was the real explanation of the face which had appeared to the two ladies? Indigestion might have explained either singly. Extraordinary coincidences do sometimes occur, but it seemed too extraordinary that a couple of ladies—one old and one young—should suffer from the same indigestion in the same house, at the same time, and with the same symptoms. On the whole, I did not feel at all comfortable, and looked carefully in all the cupboards and recesses, as well as under the bed, before starting to undress. Then I went to the door, intending to lock it. Just as my hand was upon the key, I heard a soft step in the corridor outside, accompanied by a sound which was something between a sigh and a groan. Very faint, but quite unmistakable, and, under the circumstances, discomposing. It might, of course, be George. Anyhow, I decided to look and see. I turned the handle gently and opened the door. There was nothing to be seen in the corridor. But on the opposite side I could see a door open, and George’s head peeping round the corner.
“‘Hullo!’ he said.
“‘Hullo!’ I replied.
“‘Was that you walking up the passage?’ he asked.
“‘No,’ I answered, ‘I thought it might be you.’
“‘Then who the devil was it?’ he said. ‘I’ll swear I heard someone.’
“There was silence for a few moments. I was wondering whether I had better tell him of the fright I had already had, when he spoke again:
“‘I say, just come here for a bit, old fellow; I want to speak to you.’
“I stepped across the passage, and we went together into the little study which adjoined his bedroom.
“‘Look here,’ he said, poking up the fire, which was burning low, ‘doesn’t it strike you that there is something very odd about this house?’