“You suggest,” he said at length, “that Marlowe constructed an alibi for himself, by means which only a desperate man would have attempted, to clear himself of a crime he did not commit. Did he tell you he was innocent?” She uttered a little laugh of impatience. “So you think he has been talking me round. No, that is not so. I am merely sure he did not do it. Ah! I see you think that absurd. But see how unreasonable you are, Mr Trent! Just now you were explaining to me quite sincerely that it was foolishness in you to have a certain suspicion of me after seeing me and being in my atmosphere, as you said.” Trent started in his chair. She glanced at him, and went on: “Now, I and my atmosphere are much obliged to you, but we must stand up for the rights of other atmospheres. I know a great deal more about Mr. Marlowe’s atmosphere than you know about mine even now. I saw him constantly for several years. I don’t pretend to know all about him; but I do know that he is incapable of a crime of bloodshed. The idea of his planning a murder is as unthinkable to me as the idea of your picking a poor woman’s pocket, Mr. Trent. I can imagine you killing a man, you know... if the man deserved it and had an equal chance of killing you. I could kill a person myself in some circumstances. But Mr. Marlowe was incapable of doing it, I don’t care what the provocation might be. He had a temper that nothing could shake, and he looked upon human nature with a sort of cold magnanimity that would find excuses for absolutely anything. It wasn’t a pose; you could see it was a part of him. He never put it forward, but it was there always. It was quite irritating at times.... Now and then in America, I remember, I have heard people talking about lynching, for instance, when he was there. He would sit quite silent and expressionless, appearing not to listen; but you could feel disgust coming from him in waves. He really loathed and hated physical violence. He was a very strange man in some ways, Mr. Trent. He gave one a feeling that he might do unexpected things—do you know that feeling one has about some people? What part he really played in the events of that night I have never been able to guess. But nobody who knew anything about him could possibly believe in his deliberately taking a man’s life.” Again the movement of her head expressed finality, and she leaned back in the sofa, calmly regarding him. “Then,” said Trent, who had followed this with earnest attention, “we are forced back on two other possibilities, which I had not thought worth much consideration until this moment. Accepting what you say, he might still conceivably have killed in self-defence; or he might have done so by accident.” The lady nodded. “Of course I thought of those two explanations when I read your manuscript.”