For the next four or five days, young Halliday went about his business in a quiet, determined manner, and thought as little as possible of Lillian. He did not even write or call to see her, since he wished to give up his whole attention to discovering the truth about Moon's death. If he thought of love and Lillian, he certainly could not concentrate his mind on the necessary search. And it was very necessary, if he intended to marry the girl. He became certain that in some way Sir John intended to trick him, but if he found out the false Mrs. Brown, and solved the mystery, Sir John would be forced out of sheer justice to sanction the marriage. It was heroical of Halliday to turn his thoughts from his beloved and it was no easy task to one so deeply in love as he. But he saw the need of it, and manfully set himself to endure present pain for future joy. Whether Lillian saw things in the same light, or resented his neglect, he did not know, as he had no word from her, neither came there any letter from Mrs. Bolstreath. Dan had, certainly been pushed out of the girl's life by her astute uncle; but it was his own common sense that kept him out of it--for the time being--be it understood. Love demands its martyrs, and Halliday had become one for Love's sake. By doing so, although he knew it not, he was displaying more real love towards her than he had ever done in his life before. Meanwhile, Laurance lost no time in publishing his letter, which dealt with the mystery of Moon's death. As _The Moment_, including its extra letter-writing sheet, had a large circulation, and as it was a season devoid of news, the letter caused great discussions. It was sufficiently alarming to those who loved law and order, since it boldly announced that a gang of criminals existed which coldly and cautiously and deliberately employed its members to put people to death. The letter called attention to the fly--and that an artificial one--on Sir Charles's neck near the poisoned wound, and declared that such was the sign-manual of the accursed society. No mention was made of the scent, since Dan had explained what Penn had said to Laurance, and Laurance had accepted the explanation as valid. But there was quite enough in the letter to startle the most dull, especially when the writer called attention to the happening of various mysterious murders, and suggested that such were the work of this misguided set of people who constituted the unknown gang; finally, Freddy ended his letter by saying that Moon had knowledge of the gang, and had sent for a Scotland Yard official--name not given--to explain the whole matter, when he met with his death. It was a fact, therefore, that the false Mrs. Brown was an emissary of the gang who had been sent to murder Sir Charles, and had performed her vile errand only too well. A postscript to the epistle invited discussion, and particularly called upon any person who knew of an artificial fly being found on a corpse to give evidence.