"That may be, my dear," rejoined Sir Thomas dryly, "but this does not apply to me. Old Rad is a very old friend of mine, but if I went with you on this errand to-night, I should be going not as a friend, but in an official capacity, and as such I cannot do it without the doctor's permission." "Very well then," she said quietly, "we'll ask Doctor Newington's permission." For a little while yet Sir Thomas Ryder seemed to hesitate. Clearly the girl's arguments, her simple conviction, and her latent energy had made a marked impression upon him. He was no longer the sceptical hide-bound official: the man, the gentleman, was tearing away at the fetters of red tape. All the old instincts of chivalry, which at times might be dormant in the heart of an English gentleman--but which are always there nevertheless, hidden away by the mantle of convention--had been aroused by Louisa's attitude toward the man she loved, and also by the remembrance of Luke's bearing throughout this miserable business. After all what the girl asked was not so very difficult of execution. There are undoubtedly cases where the usual conventional formulas of etiquette must give way to serious exigencies. And there was unanswerable logic in Louisa's arguments: at any time in the near future that old Rad--either through his own obstinacy, or the stupidity or ill-will of a servant--got hold of a newspaper, the suddenness of the blow which he would receive by learning the terrible news without due preparation, would inevitably prove fatal to him. Sir Thomas Ryder prided himself on being a diplomatist of the first water: he did believe that he could so put the necessary questions to Lord Radclyffe, with regard to Luke, that the old man would not suspect the truth for a moment. The latter had, of course, known of the murder before he had been stricken with illness; he had at the time answered the questions put to him by the police officer, without seeming to be greatly shocked at the awful occurrence; and it was not likely that he would be greatly upset at a professional visit from an old friend, who at the same time had the unravelling of the murder mystery at heart. All these thoughts mirrored themselves on Sir Thomas's wrinkled face. He was taking no trouble to conceal them from Louisa. Soon she saw that she had won her first victory, for her uncle now said with sudden determination: