he transferred his attention to her

She would be able to identify him anywhere now. And his clothes. He was well enough dressed, but that did not make him look like a gentleman. Nothing could. Baffled by the driver's silence, he transferred his attention to her. He opened the door, and leaned in as he asked his previous question in a rather different form, "Perhaps you'll be good enough to say why you're following me?" She smiled as she gave a flippantly evasive answer, "It must have been because you were in front." He looked at her uncertainly, showing no appreciation of the humour of this reply. He said, "I shall need a better explanation than that." She saw that it was useless to attempt concealment of the fact that she had been following him. After that backward turn! She said boldly, "We thought you'd got the wrong case." He stared at her in mingled fear and bewilderment. "What made you think that?" "Because the labels had got a bit mixed." "And who are you?" "I brought the case over for Mr. Kindell." His next question was checked unspoken. Could he ask more without giving himself away to this dubious stranger? He said, "Well, you shall have your way." He went back to the front door, and got in beside the driver. As he did so, the car in front began to move ahead. He said to the driver: "You can go on following it. We don't mind." Irene observed his action with excitement rather than apprehension. She was certainly succeeding in what Will had relied on her to do, though no one could have foreseen what was happening now. She was in a civilized city, on the side of the law, and in her own hired taxi. And the man who had got in did not appear to be a formidable kind. But she had become cautious. She decided that she would not go far in pursuit of the light grey car without having something more to say.