The Layton Court Mystery by Anthony Berkeley

Like many of the other rooms at Layton Court, the library had been largely modernised. Dark oak panelling still covered the walls, but the big open fireplace, with its high chimneypiece, had been blocked up and a modern grate inserted. The room was a large one and (assuming that we are standing just inside the hall with our backs to the front door) formed the right-hand corner of the back of the house corresponding with the dining room on the other side. Between these two was a smaller room, of the same breadth as the hall, which was used as a gunroom, storeroom, and general convenience room. The two rooms on either side of the deep hall in the front of the house were the drawing room, on the same side as the library, and the morning room opposite. A narrow passage between the morning room and the dining room led to the servants' quarters.

In the side of the library which faced the lawn at the back of the house had been set a pair of wide French windows, as was also the case in the dining room; while in the other outer wall, looking over the rose garden, was a large modern window of the sash type, with a deep window seat below it set in the thickness of the wall. The only original window still remaining was a small lattice one in the corner on the left of the sash window. The door that led into the room from the hall was in the corner diagonal to the lattice window. The fireplace exactly faced the French windows.