Read "The Silent House" by Fergus Hume online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
Going by circumstantial evidence, Diana certainly had good grounds to accuse Mrs. Vrain of committing the crime, for there were four points at least which could be proved past all doubt as incriminating her strongly in the matter.
In the first place, the female shadow on the blind seen by Lucian, showed that a woman had been in the habit of entering the house by the secret way of the cellar, and during the absence of Vrain.