judgment, which warned him he was taking on a foolhardy enterprise, sprang his great surprise.

“Well,” he said, “perhaps I can help you, after all. You know, in Fenways I’m supposed to be only a motor-dealer. Really, I have been working for over two years quite secretly on a combination of aeroplane and motor-car, and now I think I have got it about perfect. You can change the motor-car to a little monoplane in less than half an hour. The wing struts telescope back into the body, so does the propeller-shaft, and the blades fold back along the shaft.”

“Have you really?” she gasped eagerly.

“Yes. Best of all, I’ve got an absolute silencer on the exhaust; I’ve run the engine at top speed on the ground and found I could not hear it a hundred yards away. So far I have only made one or two flights, but they were quite successful. It seats two in little cockpits placed one on each side of the centre line where the propeller shaft runs. Why shouldn’t we try to fly her over tonight? I feel pretty sure we could do it at ten thousand feet without the direction-finders knowing anything about us.”

“Excellent!” cried the girl.

“The great disadvantage is that I can’t get any speed to speak of on the ground. I have had to make everything very light, of course, and I fancy about twenty miles an hour, unless the roads were exceptionally good, would be our limit. We should have no chance of getting away if we were chased on the ground—or in the air, for that matter—if we were spotted. We might fly over to-night and chance getting caught. Of course, I have my pilot’s certificate, and if we were caught I could easily explain that I was making a night flight and my compass had gone wrong. It wouldn’t be a very serious matter the first time as, of course, we should have nothing contraband. If we got over safely we could take the chance of coming back loaded.”

Yvette had become suddenly radiant.

“Why, Dick!” she cried, “that’s the very thing. We simply can’t be caught. And when we land anywhere we can be ordinary motorists. It’s wonderful—wonderful!”

“Don’t be too sure,” replied Dick grimly. “The Air Police are pretty wide awake. However, it’s worth trying. Now, shall we go to-night? There’s a train from Liverpool Street at six-twenty. We shall get down to Fenways by nine. We shall have five miles to walk to the shed where I keep the machine—of course, we daren’t drive out—and we must manage to reach Paris about dawn. If we are too early I cannot land 

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