In the year 1860, the reputation of Doctor Wybrow as a London physician reached its highest point. It was reported on good authority that he was in receipt of one of the largest incomes derived from the practice of medicine in modern times. One afternoon, towards the close of the London season, the Doctor had just taken his luncheon after a specially hard morning's work in his consulting-room, and with a formidable list of visits to patients at their own houses to fill up the rest of his day-when the servant announced that a lady wished to speak to him. 'Who is she?' the Doctor asked. 'A stranger?'