"I next proceeded to the rise and lowered myself down the pit by the creepers inside. About ten feet down the vegetable growth ceased, and the further descent was impossible without ropes. But at the limit of the distance to which a man can climb down unaided, I saw a peg sticking into the side of the pit, with a fishing line suspended from it. I drew up the line, and found attached to it the murdered man's pocket-book containing the £300 he had drawn out of the bank at Heathfield the day he was murdered.
"Let me now try to reconstruct the crime in the light of the fresh information we have gained. Benson was in desperate straits for money, and he knew that Mr. Glenthorpe had drawn £300 from the bank that morning, all in small notes, which could not be traced. The fact that he obtained a second key to the room suggests that he had been meditating the act for some time past. It will be found, I think, when all the facts are brought to light, that he obtained the second key when he learnt that Mr. Glenthorpe intended to take a large sum of money out of the bank. Penreath's chance arrival at the inn on the day that the money was drawn out, probably set him thinking of the possibility of murdering and robbing Mr. Glenthorpe in circumstances that would divert suspicion to the stranger. Penreath unconsciously helped him by leaving his match-box in the room where he had dined with Mr. Glenthorpe. Benson found the match-box on looking into the room to see that everything was all right when his guests had retired, and determined to commit the murder that night, and leave it by the murdered man's bedside, as a clue to direct attention to Penreath. His next idea, to murder Mr. Glenthorpe with the knife which Penreath had used at dinner, probably occurred to him as he considered the possibilities of the match-box.
"It is difficult to decide why Benson chose to enter the room from the window instead of by the door when he had a second key of the room. He may have attempted to open the door with the key, and found that Mr. Glenthorpe had locked the door and left the key on the inside. Or he may have thought that as Penreath was sleeping in the next room, he ran too great a risk of discovery by entering from the door, and so decided to enter by the window. We must presume that Benson subsequently found Mr. Glenthorpe's key, either inside the door or under his pillow, and kept it. He entered the window, stabbed Mr. Glenthorpe, and placed the match-box and the knife at the side of the bed. His next act would be to search for the money. Finding it difficult to search by the light of the tallow candle, he decided to go downstairs and turn on the gas.
"During his absence Peggy entered the room, saw the dead body, and picked up the knife and the match-box. Then she picked up the candlestick by the bed, and fled in terror. Benson, after turning on the gas at the meter, returned to find the room in darkness. Thinking that the wind had blown out the candle, he walked to the gas with the intention of lighting it. In doing so he knocked his head against the globe, cutting his forehead, and smashing the incandescent burner.
"Benson, when he found that the candlestick had disappeared must, in his fright, have rushed downstairs for another. He could not light the gas, because he had smashed the burner. In no other way can I account for the second lot of candle-grease that I found in the room underneath the gas-light, which made me believe at first that the room had been visited by two persons on the night of the murder. There were two persons, Benson and his daughter, but Peggy did not bring a candlestick into the room. It looks to me as though Benson, on returning with the second candle, attempted to light the gas with it and failed. That action would account for the gas tap being turned on, and the spilt grease directly underneath. He then searched the room till he found the pocket-book containing the money.
"The subsequent removal of the body to the pit strikes me as an afterthought. The complete plan was too diabolically ingenious and complete to have formed in the murderer's mind at the outset. The man who put the match-box and knife by the bedside of the murdered man in order to divert suspicion to Penreath had no thought, at that stage, of removing the body. That idea came afterwards, probably when he went upstairs the second time with the lighted candle, and saw Penreath's boots outside the door. I cannot help thinking that the clue of the footprints, which was such a damning point in the case against Penreath, was quite an accidental one so far as the murderer was concerned. The thought that the boots would leave footprints which would subsequently be identified as Penreath's was altogether too subtle to have occurred to a man like Benson. That is the touch of a master criminal—of a much higher order of criminal brain than Benson's.
"It is my belief that he originally intended to leave the murdered man in his room, thinking that the match-box and knife would point suspicion to Penreath. But after killing Mr. Glenthorpe he was overcome with the fear that his guilt would be discovered, in spite of his precautions to throw suspicions on another man, and he decided to throw the body into the pit in the hope that the crime would never be found out. The fact that he had entered the room in his stocking feet supports this theory, because he would be well aware that he would not be able to carry the body over several hundred yards of rough ground in his bare feet. He took Penreath's boots, which were close at hand, in preference to the danger and delay which he would have incurred in going to his own room, some distance away, for his own boots. Having put on the boots, he took the body on his shoulders and conveyed it to the pit.
"There are two or three points in this case which I am unable to clear up to my complete satisfaction. Why did Benson leave the key in the outside of the door? Was it merely one of those mistakes—those oversights—which all murderers are liable to commit, or did he do it deliberately, in the hope of conveying the impression that Mr. Glenthorpe had gone out and left the key in the outside of the door. In the next place, I cannot account for the mark of the box underneath the window. There is a third point—the direction of the wound in the murdered man's body, which gave me some ideas at the time that I am now compelled to dismiss as erroneous. But these are points that I hope will be cleared up by Benson's arrest, and confession, for I am convinced, by my observation of the man, that he will confess.
"There are one or two more points. Benson is an ardent fisherman, who spends all his spare time fishing on the marshes. The stolen pocket-book was suspended in the pit by a piece of fishing line. But I attach more importance to the second point, which is that since the murder has been committed the nightly conversation at the inn tap-room has centred around a local ghost, known as the White Lady of the Shrieking Pit, who is supposed from time immemorial to have haunted the pit where the body was thrown, and to bring death to anybody who encounters her at night. This spectre, which is profoundly believed in by the villagers, had not been seen for at least two years before the murder, but she made a reappearance a night or two after the crime, and is supposed to have been seen frequently ever since. It looks to me as though Benson set the story going again in order to keep the credulous villagers away from the pit where the money was concealed.
"This morning, in company with Mr. Oakham, I saw Penreath in the gaol, and by a ruse induced him to break his stubborn silence. His story, which it is not necessary for me to give you in detail, testifies to his innocence, and supports my own theory of the crime. He did not see the murder committed, but he saw the girl go into the room, and subsequently he saw her father enter and remove the body. It was the latter spectacle that robbed him of any lingering doubts he may have had of the girl's guilt, and forced him to the conclusion that she and her father were accomplices in the crime. But he loved her so much that he determined to keep silence and shield her."