“Perfectly so.”
“The windows of the three rooms open out upon the lawn. That fatal night Dr. Roylott had gone to his room early, though we knew that he had not retired to rest, for my sister was troubled by the smell of the strong Indian cigars which it was his custom to smoke. She left her room, therefore, and came into mine, where she sat for some time, chatting about her approaching wedding. At eleven o’clock she rose to leave me, but she paused at the door and looked back.
“ ‘Tell me, Helen,’ said she, ‘have you ever heard anyone whistle in the dead of the night?’
“ ‘Never,’ said I.
“ ‘I suppose that you could not possibly whistle, yourself, in your sleep?’
“ ‘Certainly not. But why?’
“ ‘Because during the last few nights I have always, about three in the morning, heard a low, cl
