The Big Four by Agatha Christie

I could not have been unconscious more than a minute. I came to myself being hustled along between two men. They had me under each arm, supporting my weight, and there was a gag in my mouth. It was pitch dark, but I gathered that we were not outside, but passing through the hotel. All round I could hear people shouting and demanding in every known language what had happened to the lights. My captors swung me down some stairs. We passed along a basement passage, then through a door and out into the open again through a glass door at the back of the hotel. In another moment we had gained the shelter of the pine trees.

I had caught a glimpse of another figure in a similar plight to myself, and realised that Poirot, too, was a victim of this bold coup.