Hewitt took the clock, unscrewed the winder and quickly stripped off the back, exposing the works. “See,” he said, “the bullet is lodged firmly among the wheels, and has been torn into snags and strips by the impact. The wheels themselves are ruined altogether. The central axle which carries the hands is bent. See there! Neither hand will move in the slightest. That bullet struck the axle and fixed those hands immovably at the moment of time when Algernon Rewse died. Look at the mainspring. It is less than half run out. Proof that the clock was going when the shot struck it. Main left Rewse alive and well at half-past nine. He did not return till two--when Rewse had been dead more than an hour.”
“But then, hang it all! How about the lies, and the false certificate, and the bolting?”
“Let me tell you the whole tale, Mr. Bowyer, as I conjecture it to have been. Poor young Rewse was, as you told me, in a bad state of health--thoroughly run down, I think you said. You said something of his engagement and the death of the lady. This pointed clearly to a nervous--a mental upset. Very well. He broods, and so forth. He must go away and find change of scene and occupation. His intimate friend Main brings him here. The holiday has its good effect perhaps, at first, but after a while it gets monotonous, and brooding sets in again. I do not know whether or not you happen to know it, but it is a fact that four-fifths of all persons suffering from melancholia have suicidal tendencies. This may never have been suspected by Main, who otherwise might not have left him so long alone. At any rate he _is_ left alone, and he takes the opportunity. He writes a note to Main, and a long letter to his mother--an awful, heartbreaking letter, with a terrible picture of the mental agony wherein he was to die--perhaps with a tincture of religious mania in it, and prophesying merited hell for himself in the hereafter. This done, he simply stands up from this table, at which he has been writing, and with his back to the fireplace shoots himself. There he lies till Main returns an hour later. Main finds the door shut, and nobody answers his knock. He goes round to the sitting-room window, looks through, and perhaps he sees the body. Anyway he pushes back the catch with his knife, opens the window and gets in, and _then_ he sees. He is completely knocked out of time. The thing is terrible. What shall he--what can he do? Poor Rewse’s mother and sister dote on him, and his mother is an invalid--heart disease. To let her see that awful letter would be to kill her. He burns the letter, also the note to himself. Then an idea strikes him. Even without the letter the news of her boy’s suicide will probably kill the poor old lady. Can she be prevented hearing of it? Of his death she must know--that’s inevitable. But as to the manner? Would it not be possible to concoct some kind lie? And then the opportunities of the situation occur to him. Nobody but himself knows of it. He is a medical man, fully qualified, and empowered to give certificates of death. More, there is an epidemic of small-pox in the neighbourhood. What easier, with a little management, than to call the death one by small-pox? Nobody would be anxious to examine too closely the corpse of a small-pox patient. He decides that he will do it. He writes the letter to Mrs. Rewse announcing that her son has the disease, and he forbids Mrs. Hurley to come near the place for fear of infection. He cleans the floor--it is linoleum here, you see, and the stains were fresh--burns the clothes, cleans and stops the wound. At every turn his medical knowledge is of use. He puts the smashed clock and the pistol out of sight under the hearth. In a word, he carries out the whole thing rather cleverly, and a terrible few days he must have passed. It never strikes him that he has dug a frightful pit for his own feet. You are suspicious, and you come across. In a perhaps rather peremptory manner you tell him how suspicious his conduct has been. And then a sense of his terrible position comes upon him like a thunderclap. He sees it all. He has deliberately of his own motion destroyed every evidence of the suicide. There is no evidence in the world that Rewse did not die a natural death, except the body, and that you are going to dig up. He sees now (you remind him of it, in fact) that _he_ is the one man alive who can profit by Rewse’s death. And there is the shot body, and there is the false death certificate, and there are the lying letters, and the tales to the neighbours and everything. He has himself destroyed everything that proves suicide. All that remains points to a foul murder, and to him as the murderer.