The distance across the Plaza was short enough, but as Lee entered the hall of the huge concrete pyramid he was reminded of Washington's Pentagon in wartime, for his progress was halted right from the start and at more than one point. He had to line up at the receptionist's, he was being checked over the phone, a pass was handed to him, and somebody, obviously a plain-clothes man, took him to the express elevator which shot him up to the 40th floor. There, another plain-clothes man conducted Lee through a long carpeted corridor and up one flight of stairs to a steel door which slid open automatically at their approach. Sunlight was flooding through its frame as Lee followed the guard and the door closed noiselessly behind them. The man from Down-Under took a deep breath. He had not expected this for it was not a stepping in, but rather a stepping out from a vast tomb into the light of day. This was the top of a huge pyramid, and was in an entirely different kind of world. The terrace was laid with flagstones and landscaped like a luxurious country club. In its middle there arose a penthouse, low and irregularly shaped like some organic outcropping of native rock. It could hardly be said that it had walls, overgrown as was the stone by creepers and built into the shape of massive pillars. The structure seemed a kind of Stonehenge improved upon by America's late great architect Frank Lloyd Wright. There were birch shade trees around the house, the leaves whispering in the breeze. From some crevice in the rock came the peaceful murmurings of a spring. A meandering little brook criss-crossed the gravel path under Lee's feet. From a stone table which might have belonged to some Pharaoh there came the only incongruous noise in this bucolic idyll; it was the nervous ticking of a typewriter, which stopped abruptly at Lee's approach, and the melodious contralto voice he had already heard over the phone greeted him. "Oh--it's Dr. Lee from Canberra University, isn't it? I'm so happy to meet you. Please, do sit down. How was your trip? I'm Oona Dahlborg, Dr. Scriven's secretary." Lee blinked. Out of this world as was this Stone Age cabin in the sky, even more so was the girl. He had a vivid image of American girls as they had been when he had left the States way back in '49; in fact, he had an all too vivid memory of at least one of them. His memory had been refreshed within the last hour at the airport, at the hotel, at the receptionist's, and it had been confirmed: they still wore masks instead of their true faces, they still were overdressed, overloud, oversexed, overhung with trinkets and their voices still resounded shrilly from the roof of their mouths.