"The Open Window" by Saki

"The Open Window" tells the tale of Framton Nuttel, a nervous man, who has come to stay in the country for his health. His sister, who thinks he should socialise while he is there, has given him letters of introduction to families in the neighbourhood whom she got to know when she was staying there a few years previously. Framton goes to visit Mrs Sappleton and, while he is waiting for her to come down, is entertained by her fifteen-year-old, witty niece. The niece tells him that the French window is kept open, even though it is October, because Mrs Sappleton believes that her husband and her brothers, who were killed in a shooting accident three years before, will come back one day.