came to see Sir Charles on business and found the corpse." "Just so. Well, after dinner we had a chat, and he told me that he was anxious to learn who killed Moon, because he didn't want any more murders of the kind to happen-as a police official, you understand."
"Strange he should be confidential on that point," murmured Halliday thoughtfully, "seeing that he wished his theory regarding a possible gang kept quiet, in the hope of making discoveries."
"He has changed his mind about secrecy, and so has Tenson," said Freddy. "Oh!" Dan raised his eyebrows. "The Inspector. You have seen him also?" Laurance nodded. "After I saw Durwin, and learned what he had to say I saw Tenson, and interviewed him. They told me about the fly on the neck, and remembering the case of the purple fern, and having regard to the fact that the fly in question was artificial, both men are inclined to believe in the existence of a gang, whose trade-mark the said fly is." Dan nodded again. "Quite so; and then Durwin came to see Moon and hear about the gang. He found him dead."
"So you said; so Durwin said," rejoined Laurance quietly. "It seems very certain, putting this and that together, that Sir Charles became dangerous to this gang, whatever it is, and wherever it exists, so was put to death by the false Mrs. Brown, who came expressly to kill him."
"So far I am with you on all fours," said Halliday. "Well?"
"Well, both Durwin and Tenson, dreading lest the gang may commit another crime, wish me to make the matter as public as I can, so as to frighten the beasts."
"H'm!" said Dan, looking at his neat brown boots. "They have changed their minds, it seems. Their first idea was to keep the matter quiet, so as to catch these devils red-handed. However, publicity may be a good thing. How do you intend to begin?"
"I have got facts from Tenson and from Durwin," said Freddy promptly; "and now, since you saw the body and found the fly, I want to get the facts from you. On what I acquire I shall write a letter in that extra sheet of ours, and you can be pretty certain from what you know of human nature that any amount of people will reply to my letter."
"They may reply to no purpose."
"I'm not so sure of that, Dan. If I mention the fly as a trade-mark and recall the strange case of the purple fern, some one may write about matters known to themselves from positive knowledge. If this gang exists, it has committed more murders than one, but the fly being a small insect may not have been noticed as a trade-mark in the other crimes. I wonder you spotted it anyhow."
"It was easily seen, being on the back of the neck near the wound. Besides, flies in November-the month of the murder-are rare. Finally Tenson discovered the fly to be artificial, which shows that it was purposely placed on the dead man's neck, near the wound. H'm!" he reflected, "perhaps someone may know of some crime with the fly trade-mark, and in that case we can be certain that such a gang does exist."
"So I think," cried Laurance quickly, "and for that reason I intend to start a discussion by writing an open letter. Publicity may frighten the beasts into dropping their trade; on the other hand, it may goad the gang into asserting itself. In either case the subject will be ventilated, and we may learn more or less of the truth."
"Yes. I think it's a good idea, Freddy. And the perfume? Did Durwin or the Inspector tell you anything about the perfume. No, I can see by your blank stare that they didn't. Listen, Freddy, and store this knowledge in your blessed brain, my son. It is a clue, I am sure," and Halliday forthwith related to his attentive listener details concerning the strange perfume which had impregnated the clothes of the dead man. "And Sir Charles hated perfumes," he ended, emphatically; "he didn't even like Lillian or Mrs. Bolstreath to use them, and they obeyed him." "Curious," mused the journalist, and idly scribbling on his blotting-paper; he was back at his desk by this time. "What sort of scent is it?"
"My dear chap, you ask me to describe the impossible," retorted Dan, with uplifted eyebrows. "How the deuce can I get the kind of smell into your head? It must be smelt to be understood. All I can say is that the perfume was rich and heavy, suggestive of drowsiness. Indeed, I used that word, and Tenson thought of some kind of chloroform used, perhaps, to stupefy the victim before killing him. But there was an odor about the mouth or nose."
"On the handkerchief, perhaps?" suggested the reporter. "No. Tenson smelt the handkerchief."
"Well, if this Mrs. Brown used this perfume, you and Miss Moon and Mrs. Bolstreath must have smelt it on her in the hall. I understand from Durwin that you all three saw the woman." "Yes. And Lillian, poor girl, persuaded her father to see the wretch. But we did not smell the perfume on the woman. Tenson or Durwin-I forget which-asked us the question."
"Humph!" said Laurance, after a pause; "it may be a kind of trade-mark, like the fly business." He took a note. "I shall use this evidence in my letter to the public. I suppose, Dan, you would recognize the scent again?"
"Oh, yes! I have a keen sense of smell, you know. But I don't expect I shall ever drop across this particular fragrance, Freddy."
"There's always Monsieur Chance, you know," remarked Laurance, tapping his white teeth with a pencil. "Perhaps the gang use this scent so as to identify one another-in the dark it may be-like cats. How does that strike you?"
"As purely theoretical," said Dan, with a shrug, and reached for another cigarette; "it's a case of perhaps, and perhaps not." Laurance assented. "But everything so far is theoretical in this case," he argued; "you have told me all you know?"
"Every bit, even to my year of probation. Do you know Curberry?"
"Yes. He was a slap-up barrister. A pity he got title and money, as he has left the Bar, and is a good man spoiled. Lucky chap all the same, as his uncle and cousin both died unexpectedly, to give him his chance of the House of Lords."
"How did they die?" "Motor accident. Car went over a cliff. Only the chauffeur was saved, and he broke both legs. Do you know the present Lord Curberry?"
"I have seen him, and think he's a dried-up, cruel-looking beast," said Dan, with considerable frankness. "I'd rather see Lillian dead than his wife."
"Hear, hear!" applauded Laurance, smiling. "The girl's too delightful to be wasted on Curberry. You have my blessing on the match, Dan."
"Thanks," said Halliday ruefully, "but I have to bring it off first. Sir John's infernally clever, and managed to get both Lillian and me to consent to let matters stand over for a year, during which time I guess he'll push Curberry's suit. But I can trust Lillian to be true to me, bless her, and Mrs. Bolstreath is quite on our side. After all," murmured the young man disconsolately, "it's only fair that Sir Charles should be avenged. Perhaps it would be selfish for Lillian and me to marry and live happy ever afterwards, without making some attempt to square things. The question is how to start. I'm hanged if I know, and so I came to you."
"Well," said Laurance thoughtfully, "there's a hope of Monsieur Chance you know. In many ways you may stumble on clues even without looking for them, since this gang-if it exists-must carry on an extensive business. All you can do, Dan, is to keep your eyes and ears and nose open-the last for that scent, you know. On my part I shall write the letter, and publish it in the annex of The Moment. Then we shall see what will happen."
"Yes, I think that's about the best way to begin. Stir up the muddy water, and we may find what is at the bottom of the pond. But there's one thing to be considered, and that is money. If I'm going to hunt for these scoundrels I need cash, and to own up, Freddy, I haven't very much." "You're so beastly extravagant," said Laurance grinning, "and your private income goes nowhere."
"Huh! what's five hundred a year?"
"Ten pounds a week, more or less. However, there's your aviation. I hear that you take people flights for money?" Dan nodded. "It's the latest fashionable folly, which is a good thing for me, old son. I get pretty well paid, and it means fun."
"With some risk of death," said Laurance drily. "Well, yes. But that is a peculiarity of present-day fun. People love to play with death-it thrills them. However, if I am to hunt for the assassin of Sir Charles, I can't give much attention to aviation, and I repeat that I want money. Oceans of it."
"Would two thousand pounds suit you?"
"Rather. Only I'm not going to borrow from you, old man, thank you."
"I