"And on the top of all that came the growing conviction that the son never would return and that he had been foully murdered for the sake of Lady Angela's pearls, which he so foolishly was carrying in his pocket that night. No wonder, then, that his sister Marion felt bitter against the people who were the original cause of all these disasters; no wonder that she threw herself heart and soul into the search for evidence against the man whom she sincerely believed to be guilty of a most hideous crime. "It was mainly due to her that the police came on the track of William Rugger, the night-watchman, and through the latter that the driver of the taxi-cab was advertised for, because Rugger remembered seeing the gentleman alight from a taxi outside Mexfield House. But Miss Shillington's valuable assistance in the matter of investigation went even further than that. She at last prevailed upon the old man-servant at Mexfield House to come forward like a man and to speak the truth. He was a poor creature, not really old, probably not more than fifty, but timid and almost abject. He had at first declined to make any statement whatever, declaring that he had nothing to say. To every question put to him by the police, he gave the one answer, 'I saw nothing, sir, I 'eard nothing. I went to bed as usual on the Friday night. The Captain 'e never expected me to sit up for 'im when 'e was out to parties, and I never 'ear 'im come in, as I sleep at the top of the 'ouse. No, sir, I didn't 'ear nothing that night. The last I seed of the Captain was at nine o'clock, when 'e got into the car and said good-night to me.' When he was shown the blood-stained hat, he burst out crying, and said, 'Yes, sir! Yes, sir! That is the Captain's 'at. My Lord! What 'as become of 'im?' He also failed to identify the scarf as being his master's property.