husband's murder might not seem so indescribably fatuous. Forgive the expression.' He looked attentively at the burning end of his cigarette, studiously unconscious of the red flag that flew in Trent's eyes for an instant at his words and the tone of them.
That emotion, however, was conquered at once. 'Your remark is perfectly just,' Trent said with answering coolness. 'I can quite believe, too, that at the time you didn't think of the possibility I mentioned. But surely, apart from that, it would have been safer to do as I said; go by the window of an unoccupied room.'
'Do you think so?' said Marlowe. 'All I can say is, I hadn't the nerve to do it. I tell you, when I entered Manderson's room I shut the door of it on more than half my terrors. I had the problem confined before me in a closed space, with only one danger in it, and that a known danger: the danger of Mrs. Manderson. The thing was almost done; I had only to wait until she was certainly asleep after her few moments of waking up, for which, as I told you, I was prepared as a possibility. Barring accidents, the way was clear. But now suppose
