“My dear madam, I had a distinct purpose in it! I wanted to draw his attention to the bell rope, and to fix it there. It may be that he is in a highly overwrought state, and has been studying too much, although I am bound to say that he seems as sound and healthy a young man, mentally and bodily, as ever I saw—but then the rats—and that suggestion of the devil.” The doctor shook his head and went on. “I would have offered to go and stay the first night with him but that I felt sure it would have been a cause of offence. He may get in the night some strange fright or hallucination; and if he does I want him to pull that rope. All alone as he is it will give us warning, and we may reach him in time to be of service. I shall be sitting up pretty late tonight and shall keep my ears open. Do not be alarmed if Benchurch gets a surprise before morning.” “Oh, Doctor, what do you mean? What do you mean?” “I mean this; that possibly—nay, more probably—we shall hear the great alarm bell from the Judge’s House tonight,” and the Doctor made about as effective an exit as could be thought of. When Malcolmson arrived home he found that it was a little after his usual time, and Mrs. Dempster had gone away—the rules of Greenhow’s Charity were not to be neglected. He was glad to see that the place was bright and tidy with a cheerful fire and a well-trimmed lamp. The evening was colder than might have been expected in April, and a heavy wind was blowing with such rapidly-increasing strength that there was every promise of a storm during the night. For a few minutes after his entrance the noise of the rats ceased; but so soon as they became accustomed to his presence they began again. He was glad to hear them, for he felt once more the feeling of companionship in their noise, and his mind ran back to the strange fact that they only ceased to manifest themselves when that other—the great rat with the baleful eyes—came upon the scene. The reading-lamp only was lit and its green shade kept the ceiling and the upper part of the room in darkness, so that the cheerful light from the hearth spreading over the floor and shining on the white cloth laid over the end of the table was warm and cheery. Malcolmson sat down to his dinner with a good appetite and a buoyant spirit. After his dinner and a cigarette he sat steadily down to work, determined not to let anything disturb him, for he remembered his promise to the doctor, and made up his mind to make the best of the time at his disposal.