Read "In the Dark" by Edith Nesbit online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
It may have been a form of madness. Or it may be that he really was what is called haunted. Or it may-though I don't pretend to understand how-have been the development, through intense suffering, of a sixth sense in a very nervous, highly strung nature. Something certainly led him where They were. And to him They were all one.
He told me the first part of the story, and the last part of it I saw with my own eyes.