He seated himself in the driver's seat of the car, and Hugh lifted the drowsy cat to the floor. Bob pushed a button, put his foot on the self-starter and the engine started. Heinrich always backed the car into the garage so that it was headed in the right direction as it stood. Hugh undid the spring catch on the door and rolled the door back. They were now ready to start. "I'll go down by the street and watch the Wernbergs," said Hugh. "I hope they haven't gotten away while we have been fooling around here." "I guess not," said Bob. "When they start you whistle twice and I'll be with you right away." "All right," agreed Hugh. "You'd better run with your lights dimmed." "I shall, don't worry." Hugh hurried away. Bob was left alone in the car and he presently shut off the engine. He had wished to warm up the motor so that it would start readily when the time came; he was convinced that it would do so now. He thought over the events of the day, and for the first time he realized that he was tired. Excitement had spurred him on and the intense interest he took in the war had made him forget all else. He wondered if he and Hugh were starting off on a wild goose chase now. What particular reason had they to suspect the Wernbergs anyway? True, all Germans were more or less under suspicion just then, but why the Wernbergs any more than the others? He recalled his fight with Frank that morning, and his father's remarks. Perhaps it was just as well to go out that night after all. Bob thought of the war and the terrible things the Germans had done. What brutes and beasts they were! The Germans had been busy in the United States too. The big factory at Eddystone had been blown up that day, with the loss of a hundred and twenty-five lives, mostly of girls. That showed what the American people had to guard against. "I hate them all!" muttered Bob angrily. He took that back a moment later, however, as he thought of Heinrich. Surely their chauffeur was as faithful and kindly a soul as ever lived; his love for animals proved that. Then there was Lena, their cook, a buxom woman of forty who had never been heard to utter a cross word in her life. Heinrich was capable of getting mad, however, particularly about the car. Bob wondered what he would say if he should arrive home now, and find him preparing to go out in it and perhaps get it dirty. His reverie was suddenly interrupted by the sound of two whistles. A moment later the motor was purring softly, and with the headlights dimmed, the big sixty horse-power car slid out of the garage and started silently down the driveway. CHAPTER VII IN THE NIGHT "They're starting," said Hugh in a low voice. He jumped upon the running board as Bob came along, and climbed into the front seat beside him. "Let's wait here a minute," he whispered.