"It was not murder," began Mr. Cupples, slowly measuring off inches with a fork on the edge of the table. "I will tell you the whole story. On that Sunday night I was taking my before-bedtime constitutional, having set out from the hotel about a quarter past ten. I went along the field-path that runs behind White Gables, cutting off the great curve of the road, and came out on the road nearly opposite that gate that is just by the eighth hole on the golf-course. Then I turned in there, meaning to walk along the turf to the edge of the cliff, and go back that way. I had only gone a few steps when I heard the car coming, and then I heard it stop near the gate. I saw Manderson at once. Do you remember my telling you I had seen him once alive after our quarrel in front of the hotel? Well, this was the time. You asked me if I had, and I did not care to tell a falsehood."
A slight groan came from Trent. He drank a little wine, and said stonily: "Go on, please."
"It was, as you know," pursued Mr. Cupples, "a moonlight night; but I was in shadow under the trees by the stone wall, and anyhow they could not suppose there was any one near them. I heard all that passed just as Marlowe has narrated it to us, and I saw the car go off towards Bishopsbridge. I did not see Manderson's face as it went, because his back was to me, but he shook his left hand at the car with extraordinary violence, greatly to my amazement. Then I waited for him to go back to White Gables, as I did not want to meet him again. But he did not go. He opened the gate through which I had just passed, and he stood there on the turf of the green, quite still. His head was bent, his arms hung at his sides, and he looked somehow ... rigid. For a few moments he remained in this tense attitude; then all of a sudden his right arm moved swiftly, and his hand was at the pocket of his overcoat. I saw his face raised in the moonlight, the teeth bared and the eyes glittering, and all at once I knew that the man was mad. Almost as quickly as that flashed across my mind, something else flashed in the moonlight. He held the pistol before him, pointing at his breast.
"Now I may say here I shall always be doubtful whether Manderson intended to kill himself then. Marlowe naturally thinks so, knowing nothing of my intervention. But I think it quite likely he only meant to wound himself, and to charge Marlowe with attempted murder and robbery.
"At that moment, however, I assumed it was suicide. Before I knew what I was doing I had leapt out of the shadows and seized his arm. He shook me off with a furious snarling noise, giving me a terrific blow in the chest, and presented the revolver at my head. But I seized his wrists before he could fire, and clung with all my strength—you remember how bruised and scratched they were. I knew I was fighting for my own life now, for murder was in his eyes. We struggled like two beasts, without an articulate word, I holding his pistol-hand down and keeping a grip on the other. I never dreamed that I had the strength for such an encounter. Then, with a perfectly instinctive movement—I never knew I meant to do it—I flung away his free hand and clutched like lightning at the weapon, tearing it from his fingers. By a miracle it did not go off. I darted back a few steps, he sprang at my throat like a wild cat, and I fired blindly in his face. He would have been about a yard away, I suppose. His knees gave way instantly, and he fell in a heap on the turf.
"I flung the pistol down, and bent over him. The heart's motion ceased under my hand. I knelt there staring, struck motionless; and I don't know how long it was before I heard the noise of the car returning.
"Trent, all the time that Marlowe paced that green, with the moonlight on his white and working face, I was within a few yards of him, crouching in the shadow of the furze by the ninth tee. I dared not show myself. I was thinking. My public quarrel with Manderson the same morning was, I suspected, the talk of the hotel. I assure you that every horrible possibility of the situation for me had rushed across my mind the moment I saw Manderson fall. I became cunning. I knew what I must do. I must get back to the hotel as fast as I could, get in somehow unperceived, and play a part to save myself. I must never tell a word to any one. Of course I was assuming that Marlowe would tell everyone how he had found the body. I knew he would suppose it was suicide; I thought everyone would suppose so.
"When Marlowe began at last to lift the body, I stole away down the wall and got out into the road by the club-house, where he could not see me. I felt perfectly cool and collected. I crossed the road, climbed the fence, and ran across the meadow to pick up the field-path I had come by, that runs to the hotel behind White Gables. I got back to the hotel very much out of breath."
"Out of breath," repeated Trent mechanically, still staring at his companion as if hypnotized.
"I had had a sharp run," said Mr. Cupples. "Well, approaching the hotel from the back I could see into the writing-room through the open window. There was nobody in there, so I climbed over the sill, walked to the bell and rang it, and then sat down to write a letter I had meant to write the next day. I saw by the clock that it was a little past eleven. When the waiter answered the bell I asked for a glass of milk and a postage-stamp. Soon afterwards I went up to bed. But I could not sleep."