"Tell me," said Trent as the other stopped to light a new cigarette, "why you took the risk of going through Mrs. Manderson's room to escape from the house? I could see when I looked into the thing on the spot why it had to be on that side of the house; there was a danger of being seen by Martin or by some servant at a bedroom window if you got out by a window on one of the other sides. But there were three unoccupied rooms on that side: two spare bedrooms and Mrs. Manderson's sitting-room. I should have thought it would have been safer, after you had done what was necessary to your plan in Manderson's room, to leave it quietly and escape through one of those three rooms.... The fact that you went through her window, you know," he added coldly, "might have suggested, if it became known, a certain suspicion in regard to the lady herself. I think you understand me." Marlowe turned upon him with a glowing face. "And I think you will understand me, Mr. Trent," he said in a voice that shook a little, "when I say that if such a possibility had occurred to me then, I would have taken any risk rather than make my escape by that way.... Oh, well!" he went on more coolly, "I suppose that to any one who didn't know her the idea of her being privy to her 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."