blocks. He looked carefully in the mirror. Maybe he was wrong. Maybe it had been several cars of that same color that had moved in and out of the traffic behind him. Well, he'd soon see. He kept on going toward the North-South Expressway, and kept watching the steel-blue Ford, glancing at his rear view mirror every time he could afford to take his eyes off the traffic. It moved back and forth, but it was never more than three cars behind him, and usually only one. Coincidence? Possibly. At Humber Avenue, he turned left and drove southwards. The steel-blue Ford turned, too. Coincidence? Still possible. He kept on going down Humber Avenue for ten blocks, until he came to the next cross street that would take him to a lower entrance to the North-South Expressway. He turned right, and the Ford followed. At the ramp leading to the northbound side of the Expressway, the Ford was two cars behind. Coincidence? No. That's pushing coincidence too far. If the men in the car had actually intended to go north on the Expressway, they would have gone on in the direction they had been taking when Bending first noticed them; they wouldn't have gone ten blocks south out of their way. Bending's smile became grim. He had never liked the idea of being followed around, and, since the loss of one of his Converters, he was even touchier about the notion. Trouble was, his fancy, souped-up Lincoln was of no use to him at all. He could outrun them on a clear highway—but not on the crowded Expressway. Or, conversely, he could just keep on driving until they were forced to stop for fuel—but that could be a long and tedious trip if they had a full tank. And besides, they might make other arrangements before they went dry. Well, there was another way. He stayed on the Expressway for the next twenty miles, going far north of where he had intended to turn off. At the Marysville Exit, he went down the ramp. He had been waiting for a moment when the Ford would be a little farther behind than normal, but it hadn't come; at each exit, the driver of the trailing car would edge up, although he allowed himself to drop behind between exits. Whoever was driving the car knew what he was doing. At the bottom of the ramp, Bending made a left turn and took the road into