And she, putting her ready lips to his, sat with him in the car at the foot of the long suspension-bridge, waiting for any person to cross. They remained there for perhaps half-an-hour, ever eager and watchful. Several taxis passed, but otherwise all was quiet in the night. Now and then across the sky fell the big beams of searchlights seeking enemy aircraft, and these they were watching, when, suddenly, a powerful, dark-painted car approached. "Look!" cried Ella. "Why, that's that fellow Benyon's car--he's a friend of Dad's!" Next moment it flashed past, and beneath the dim light at the head of the bridge they both caught a glimpse of two men within, one of whom was undoubtedly Theodore Drost. "Quick!" cried Ella. "Let's follow them! Fortunately you have to-night another car, unknown to them!" In an instant Seymour Kennedy had started his engine, and slowly he drew out across the bridge, speeding after the retreating car over the river, along Bridge Road to Hammersmith Broadway and through Brook Green, in a direction due north. Through the London streets it was not difficult at that hour to follow the red tail-light of the car in which Drost sat with his bosom friend George Benyon, a mysterious person who seemed to be an adventurer, and who lived somewhere in York or its vicinity. "I wonder if they are going up to York?" Ella asked, as she sat in the deep seat of the coupe at her lover's side. "We'll see. If they get on to the North Road we shall at once know their intentions," was her lover's reply. Half-an-hour later the pseudo-Dutch pastor and his companion, driven by rather a reckless young fellow, were on the main Great North Road, and Kennedy, possessing a lighter and superior car, had no misgivings as to overtaking them whenever he wished. On through the night they went, passing Barnet, Hatfield, Hitchin, the cross-roads at Wansford, and up the crooked pebbled streets of Stamford, until in the grey of morning they descended into Grantham, with its tall spire and quaint old Angel and Crown Hotel. It was there that Drost and his companion breakfasted, while Ella and her lover waited and watched. Some devilish plot of a high-explosive nature was in progress, but of its true import they were in utter ignorance. Yet their two British hearts beat quickly in unison, and both were determined to frustrate the outrage, even at the sacrifice of their own lives. At three o'clock in the afternoon Drost and Benyon drew up at the Station Hotel at York, and there took lunch, while Ella and her lover ate a very hurried and much-needed meal in the railway-buffet in the big station adjoining. Then, after they had watched the departure of the big mud-spattered car which contained the two conspirators, they were very quickly upon the road again after them. Out of the quiet old streets of York city, past the Minster, they turned eastward upon that well-kept highway which led towards the North Sea Coast.