The next morning, also, Halsey and I made an exhaustive examination of the circular staircase, the small entry at its foot, and the card-room opening from it. There was no evidence of anything unusual the night before, and had we not ourselves heard the rapping noises, I should have felt that Louise’s imagination had run away with her. The outer door was closed and locked, and the staircase curved above us, for all the world like any other staircase.Halsey, who had never taken seriously my account of the night Liddy and I were there alone, was grave enough now. He examined the paneling of the wainscoting above and below the stairs, evidently looking for a secret door, and suddenly there flashed into my mind the recollection of a scrap of paper that Mr. Jamieson had found among Arnold Armstrong’s effects. Let’s Just Go Camping And Not Come Back At All Shirt, Hoodie. As nearly as possible I repeated its contents to him, while Halsey took them down in a note-book.