 It had not started to rain, yet there was a feeling of pressure in the atmosphere.In "The Big Sleep", Chandler expanded this description of the room and used new detail (e.g.the contrast of white and "bled out", the coming rain) to foreshadow the fact that Mrs. Regan (Mrs. O'Mara in the original story) is covering up the murder of her husband by her sister and that the coming rainstorm will bring more deaths