For a moment I wished that I were armed. Sterndale's fierce face turned to a dusky red, his eyes glared, and the knotted, passionate veins started out in his forehead, while he sprang forward with clenched hands towards my companion. Then he stopped, and with a violent effort he resumed a cold, rigid calmness, which was, perhaps, more suggestive of danger than his hot-headed outburst.
"I have lived so long among savages and beyond the law," said he, "that I have got into the way of being a law to myself. You would do well, Mr. Holmes, not to forget it, for I have no desire to do you an injury."
"Nor have I any desire to do you an injury, Dr. Sterndale. Surely the clearest proof of it is that, knowing what I know, I have sent for you and not for the police."
Sterndale sat down with a gasp, overawed for, perhaps, the first time in his adventurous life. There was a calm assurance of power in Holmes's manner which could not be withstood. Our visitor stammered for a moment, his great hands opening and shutting in his agitation.
"What do you mean?" he asked at last. "If this is bluff upon your part, Mr. Holmes, you have chosen a bad man for your experiment. Let us have no more beating about the bush. What DO you mean?"
"I will tell you," said Holmes, "and the reason why I tell you is that I hope frankness may beget frankness. What my next step may be will depend entirely upon the nature of your own defence."
"My defence against what?"
"Against the charge of killing Mortimer Tregennis."
Sterndale mopped his forehead with his handkerchief. "Upon my word, you are getting on," said he. "Do all your successes depend upon this prodigious power of bluff?"
"The bluff," said Holmes sternly, "is upon your side, Dr. Leon Sterndale, and not upon mine. As a proof I will tell you some of the facts upon which my conclusions are based. Of your return from Plymouth, allowing much of your property to go on to Africa, I will say nothing save that it first informed me that you were one of the factors which had to be taken into account in reconstructing this drama--"
"I came back--"
"I have heard your reasons and regard them as unconvincing and inadequate. We will pass that. You came down here to ask me whom I suspected. I refused to answer you. You then went to the vicarage, waited outside it for some time, and finally returned to your cottage."
"How do you know that?"
"I followed you."
"I saw no one."
"That is what you may expect to see when I follow you. You spent a restless night at your cottage, and you formed certain plans, which in the early morning you proceeded to put into execution. Leaving your door just as day was breaking, you filled your pocket with some reddish gravel that was lying heaped beside your gate."
Sterndale gave a violent start and looked at Holmes in amazement.
"You then walked swiftly for the mile which separated you from the vicarage. You were wearing, I may remark, the same pair of ribbed tennis shoes which are at the present moment upon your feet. At the vicarage you passed through the orchard and the side hedge, coming out under the window of the lodger Tregennis. It was now daylight, but the household was not yet stirring. You drew some of the gravel from your pocket, and you threw it up at the window above you."