Hampstead Mystery

"[...]flashing his torch as he ran up, saw a small electric light niche in the wall before he reached the first landing. The catch of the light was underneath, and Inspector Seldon turned it on. The light revealed that the stairs swept round at that point to the landing of the first floor, which was screened from view by heavy velvet hangings, partly caught back by the bent arm of a marble figure of Diana, which faced downstairs, with its other arm upraised and about to launch a hunting spear. By this graceful device the curtains were drawn back sufficiently to give access to the corridor on the first floor. Inspector Seldon looked closely at the figure and the hangings. Something strange about the former arrested his eye. It was standing awry on its pedestal—was, indeed, almost toppling over. He looked up and saw that one of the curtains supported by the arm hung loosely from one of the curtain rings. It was as though some violent hand had torn at the curtain in passing, almost dragging it from the pole and precipitating the [...]".