英文を読み解く。
I was extremely anxious that she shouldn't betray herself. I reasoned, save the mark, as a psychologist. I had no doubt that the man knew of her being there; but he only knew it by hearsay. And that was bad enough. I could not help feeling that if he obtained some evidence for his senses by any sort of noise, voice, or movement, his madness would gain strength enough to burst the lock. I was rather ridiculously worried about the locks. A horrid mistrust of the whole house possessed me.
訳
