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THE HOUSE OF MYSTERIES
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knew how regular his habits was, you'd know how I'm feeling, sir!"

"I do know, Mary; I quite understand," Mr. Carrington assured her in his soothing voice, and there could be no doubt he was wondering just as hard as she.

"What o'clock does he generally go out?" he asked.

"At nine o'clock almost exactly every night, sir!"

Mr. Carrington looked thoughtfully out of the window into the garden, and then at last looked down at the ink and paper and pen. Not a word was written on the paper yet.

"Look here, Mary," he said very confidentially. "I am a friend of Mr. Rattar's and I am sure you would like me to try and throw a little light on this. Perhaps something is troubling him and I could help you to clear it up."

"Oh, sir," she cried, "you are very kind! I wish you could!"

"Perhaps the best thing then," he suggested, "would be for me not to leave a note for him after all, and for you not even to mention that I have called. As he knows me pretty well he would be almost sure to ask you whether I had come in and if I had left any message and so on, and then he might perhaps find out that we had been talking, and that wouldn't perhaps be pleasant for you, would it?"

"Oh, my! No, indeed, it wouldn't!" she agreed. "I'm that feared of the master, sir, I'd