The others went upstairs, a slow unwilling procession. If this had been an old house, with creaking wood, and dark shadows, and heavily panelled walls, there might have been an eerie feeling. But this house was the essence of modernity. There were no dark corners - no possible sliding panels - it was flooded with electric light - everything was new and bright and shining. There was nothing hidden in this house, nothing concealed. It had no atmosphere about it. Somehow, that was the most frightening thing of all. They exchanged good- nights on the upper landing. Each of them went into his or her own room, and each of them automatically, almost without conscious thought, locked the door....