As they reached the top of the stairs, a lady clad in deep mourning with a thick black veil concealing her whole head and face stepped forward and laid her hand on Bobo's arm. At first Bobo shrank back from this sable apparition, but she pushed the veil aside sufficiently for him to see her face, and he grinned from ear to ear. "You fool!" said Jack to himself. "Not to have seen through that!" Miriam and the two young men went quickly down the way to the side entrance of the station. Jack was not far behind them. In that confusion of people there was little danger of their spotting him. Outside among the waiting automobiles was a big Macklin touring car, and Miriam led the two men towards it. Jack swore at himself again. "She had the wit to hire a special car, while you have to trust to a taxi!" He jumped in a taxi. "Follow that Macklin car that's just turning out," he said. "Ten dollars bonus, if you stick to it." The touring car did not turn South towards the center of town, but headed North by the bridge over the railway tracks. At the first wide street, North avenue, Jack read on the street lamps, it turned East, then North again on another wide thoroughfare which finally brought them out into the country. "Double fare outside the City limits," the chauffeur said laconically. "Let her go," said Jack. "I'm good for it." A short turn through a lane brought them to another main highway. "Belair Road," said the chauffeur, "main road to the North." "Have you a full tank?" asked Jack. He nodded. "Follow them to New York then if necessary!" On this dark road the occupants of the touring car soon discovered that they were being followed. They put on speed. "Give her all she'll take," said Jack. Fortunately the taxi was of a good make, and the engine was tight and clean. The little car gave a good account of itself. Moreover the road was smoothly paved, which further helped equalize the chances of light car and heavy one. Pursued and pursuer roared down the dark highway with cut-outs open. For several miles the way lay over one steep hill after another. They precipitated themselves recklessly down each declivity, gaining a momentum at the bottom that carried them almost to the top again without slackening. "This is faster than I'm allowed to run her," said Jack's chauffeur. "That's all right. I'll be responsible for the damage." The man grinned and stepped a little harder on his accelerator. At first the big Macklin car set up a pace they were unable to match, but apparently the driver was unfamiliar with the road, and after he had narrowly escaped flinging his car in the ditch on several sharp turns, he was compelled to slow down somewhat. This gave them an even chance. They kept about a hundred feet behind the red eye of the tail-light ahead. "We're holding them all right," said Jack's chauffeur. The words were scarcely out of his mouth when there came a report like a small field piece beneath them.