And now Halliday scarcely knew what to do, or how to act. He did not dare to tell the police, as the first sign of activity on the part of the authorities would mean his own death in some mysterious way. He also would be found with an artificial fly near the wound and the odor of the Sumatra scent on his clothes. As Dan did not wish to die, he therefore hesitated to make any statement to Inspector Tenson of Hampstead, who was so anxious to learn the secret and gain the reward. In fact, he hoped that the man would not come to his rooms--he had been there several times in quest of information--lest he should smell the Sumatra scent. Dan found that he had brought the perfume away on his clothes when he examined them, which was scarcely to be wondered at considering how powerfully the dark room had reeked of the odor. Certainly Tenson did not know the scent so well as Halliday did, although he had experienced a whiff of it when examining the body of Sir Charles Moon. But he might have forgotten the smell. While Dan turned over his clothes--the blue serge suit he had worn on the previous night--he found a piece of paper in one of the trousers pockets, which contained a message typewritten in crimson ink. It was set forth in the third person, by no less an individual than Queen Beelzebub herself, and ran as follows-- "QUEEN BEELZEBUB warns Daniel Halliday that not only his own life depends upon his secrecy but the life of Lillian Moon also. Should he apply to the authorities, or in any way recount his adventures, the girl he loves will be put out of the way, and afterwards Daniel Halliday will be dealt with. At the end of thirty days Queen Beelzebub expects to receive homage from her new subject, who will receive notice of time and place fixed for the ceremony. Remember!" "Quite a Charles-the-First ring about that last word," thought Dan, frowning at the threatening message; "the scoundrels: they have tied my hands with a vengeance. What the deuce am I to do?" It was useless for him to ask himself this question as the only answer could be, "Nothing!" If he moved in any way likely to harm the society he ran the chance of sacrificing, not only himself, but Lillian. It was bad enough that he should be done to death; but he might have risked that so as to break up the organization; but it was impossible to place the girl he loved in so dangerous a position. Queen Beelzebub knew what she was about when she used the phrase. And Halliday was well aware that the Society had a long arm, and that nothing could protect Lillian from these moles who were working in darkness--clever, deadly, and unscrupulous.