THE CIRCULAR SX4IRCASE By mir.' *> ROBERTS ❖ RINEHAHT iILWTMTIOM BY ?,'^wV^V HPYiUUiT net BY T SYNOPSIS. Miss Innes, spinster and guardian of r. Walker was the man. Louise was found unconscious ®.t the bottom of the circular staircase. She said something had brushed by her In the dark on the stairway and she fainted. Bailey Is suspected of Arm strong's murder. Thomas, the lodgekeep er, was found d#ad with a note in his f locket bearing the name "Lucien Wal ace." A ladder found out of place deep ens the mystery. The stables were burned, and In the dark Miss Innes shot an intruder. Halsey mysteriously disap peared. His auto was found wrecked by freight train. It developed Halsey had an argument In the library with a woman before his disappearance. New cook dis appears. Miss Innes learned Halsey was alive. Dr. Walker's face becomes livid at mention of the name of Nina Carrlng ton. Evidence was secured from a tramp that a man, supposedly Halsey, had been bound and gagged and thrown Into an •mpty box car. Gertrude was missing. Hunting for her. Miss Innes ran Into a man and fainted. A confederate of Dr. Walker confessed liis part In the mys tery. He stated that the Carrlngton wo man had been killed, that AValker feared her, and that he believed that Paul Arm strong had been killed by a hand guided by Walker. Halsey was found in a dis tant hospital, l'aul Armstrong was not dead. CHAPTER XXXl.—Continued. The slip had said "chimney." It ■was the only clue, and a house as large as Sunnyside was full of t'- There was an open fireplace ' dressing room, hut none in the room, and as I lay there, look around, 1 thought of something that made mo sit up suddenly. The trunlc room, just over my head, had an open fireplace and a brick chimney, and yet there was nothing of the kind in my room. I got out of bed and ex amined the opposite wall closely. There was apparently no flue, and I knew there was none in the hall Just beneath. The house was heated by steam, as I have said before. In the living room was a huge open fireplace, but it was on the other side. Why did the trunkroom have both a radiator and an open fireplace? Architects were not usually erratic. It was not 15 minutes before I was up stairs, armed with a tape-measure in lieu of a foot-rule, eager to justify Mr. famieson's opinion of my intelligence, and firmly resolved not to tell him of my suspicion until I had more than theory togo on. The hole in the trunkroom wall still yawned there, be tween the chimney and the outer wall. I examined it again, with no new re ■ult. The space between the brick wall and the plaster and lath one, however, iiad a new significance. The hole showed only one side of the chim ney, and 1 determined to investigate ■what lay in the space on the other aide of the mantel. I had a blister on my palm when at last the hatchet went throughttnd fell with whatsounded like the report of a gun to my overstrained nerves. I sat on a trunk, waiting to hear Liddy fly up the stairs, with the household be hind her, like the tail of a comet. But nothing happened, and with a growing feeling of uncanniness I set to work enlarging the opening. The result was absolutely nil. When I could hold a lighted candle in the opening I saw precisely what I had Been on the other side of the chimney — a space between the true wall and the false one, possibly seven feet long and about three feet wide. It was in no sense of the word a secret cham ber, audit was evident it had not been disturbed since the house was built. It was a supreme disappoint ment. It had been Mr. Jamieson's idea that the hidden room, if there was one, would be found somewhere near the circular staircase. In fact, I knew that he had once investigated the en tire length of the clothes chute, hang ing to a rope, with this in view. 1 was reluctantly about to concede that he had been right, when my eyes fell on the mantel and fireplace. The lat ted had evidently never been used; It was closed with a metal fire front, and only when the front refused to ■tove, and investigation showed that it was not intended to be moved, did my spirits revive, I Uurrled Into the next room. Yes, •ure enough, there was a similar man tel and fireplace there, similarly closed In both rooms the chimney flue extended well out from the wall I measured with the tape-line, my hands trembling no that I could scarcely hold It. Th