She had already turned to go, but she did rather fretfully come back for a moment. She even leaned out over the cliff face to see where he was pointing. He was standing a little behind her, and he put his hand on her waist to steady her. At this moment it suddenly occurred to him how completely alone they were. There was not a human creature anywhere, not a leaf stirring, not even a bird awake. In a place like this the danger that there would be a hidden microphone was very small, and even if there was a microphone it would only pick up sounds. It was the hottest, sleepiest hour of the afternoon. The sun blazed down upon them, the sweat tickled his face. And the thought struck him....