On a dreary afternoon of November, when London was closely wrapped in a yellow fog, Hermione Lester was sitting by the fire in her house in Eaton Place reading a bundle of letters, which she had just taken out of her writing-table drawer. She was expecting a visit from the writer of the letters, Emile Artois, who had wired to her on the previous day that he was coming over from Paris by the night train and boat.