‘Three times the pursued and the pursuer passed in succession outside the window, treading their narrow circle, before I fully awoke to the need of some action, however desperate. I shook the door with rattling violence; when next I saw the face of the unconscious victim I beat furiously on the window; then I tried to break the window. But it was a double window of exceptionally thick glass, and so deep was the embrasure that I doubted if I could properly reach the outer window at all. Anyhow, my dignified client took no notice of my noise or signals; and the revolving shadow-pantomime of those two masks of doom continued to turn round and round me, till I felt almost dizzy as well as sick. Then they suddenly ceased to reappear. I waited; and I knew that they would not come again. I knew t
