Thornton Carey had never seen Trenton Warren; he was therefore not in a position to identify him absolutely, how complete the chain of evidence might otherwise be. Trenton Warren was also totally unacquainted with the personal appearance of Thornton Carey, would not recognise him if he saw him, and therefore would associate no suspicion with him. Neither had Mrs. Jenkins seen her husband's brother, who was, it must be remembered, in total ignorance of her existence; but she had had so much evidence, so many proofs of the strong resemblance which existed between Ephraim Jenkins and Trenton Warren, proofs which had culminated in Miss Montressor's exclamation upon seeing him, that Mrs. Jenkins felt convinced she would be able to identify him for the information and satisfaction of Thornton Carey, who might otherwise be entirely thrown off the scent by a change of name. Supposing on his arrival in London he were to find out that Mr. Dolby had ceased to be Mr. Dolby, he would be perfectly helpless in the matter; but it was of no consequence to her by what name the murderer should be passing among the unconscious crowd; the man whose face and figure might be mistaken for those now mouldering in the grave, the face and figure of him who had been so dear to her with all his faults and shortcomings, could not escape her lynx-eyed recognition and her determined pursuit. Thornton Carey and Mrs. Jenkins were not long in getting through the ceremonial of dinner, after which, when their undisturbed solitude was assured, they opened the letter which Mr. Dunn had with unsuspecting reliance placed that day upon the table in the hall. The object of Thornton Carey's absence during the afternoon had been to obtain an interview with some of the police authorities in London, to whom he had made certain statements, which had resulted in a close watch being set upon the movements of the occupant of Mrs. Watts's incomparable drawing-room floor. It was not with any remarkable reluctance, or any sense that she was doing what, under other circumstances, would have been a felony, that Mrs. Jenkins had abstracted the letter upon which so much depended. In her eyes, everything that could be done for the furtherance of the project upon which she and her companion were bent would have been strictly allowable, if not praiseworthy. Thornton Carey's notions were a good deal more formal; but he had secured himself against risk in this matter. The trap in which Mr. Dunn was to be caught when all their preparations were so complete that it was impossible he should set himself free from it by any exercise of teeth or claws, or their equivalent in human cunning--when he would walk into it was not even left to his discretion--we shall shortly see.