The driver jumped up to his seat, the horn gave its bull-like note of warning, and gliding round the car began to head back towards Esher with the open common on either side and the pelting wind behind. It slackened for a moment at the fork in the high-road, turned to the right, and then began to draw away northward with an increased speed that showed the driver to be capable of rising to his instructions. "It is fortunate that the inspector is not a motoring man," thought Salt to himself with an inward smile. "This is very much too good." But the inspector only noticed that with the increased speed the car seemed to run more smoothly, and even then he had no means of judging what the increase had become. The man whose car it was knew that a very different explanation than mere speed lay behind the sudden change that made the motion now sheer luxury. He knew with absolute conviction what had happened, and he would have known without any further evidence that the driver who now had his hand upon the wheel was a thousand miles ahead of constable-_chauffeur_ Murphy in motor-craft. It was not the first suggestion of some friendly influence at work that had stirred his mind. The incident of the stranded waggon across the road by Ripley was little in itself. Even when they were a second time delayed by the fallen tree a few miles further on nothing but an unreasoning hope could have called it more than coincidence. But with the third episode a matured plan began to loom through the meaningless delays. Oil was here, and where there was oil in England at that day the hand of the Unity League might be traced not far away. In his mind's eye Salt ran over half a dozen miles of the Portsmouth road. As far as he could remember, if it was _intended_ to block the road there was scarcely a more suitable spot than the long railway bridge to be found between Esher and Kingston, and, followed the thought, if it was intended to force Moeletter to accept the bridge at Molesey, no point in all the high-road south of the fork would have served. The three accidents had taken place each at the exact point where it would best serve its purpose. Salt did not even glance at the driver when he returned from the fire. He leaned back in his seat in simple enjoyment, and Inspector Moeletter thought from his appearance that he was going to sleep. There was little to be gained by looking out, apart from the policy of unconcern. The huge white motor-car that was waiting in the cross-road by Esher station had its head-lights masked, and in the snow-storm and the night it could not have been seen ten yards away. The driver of the green car sounded his horn for the road as he swept by, and ten seconds later the white car glided out from its place of concealment like a ghostly mastodon, and, baring its dazzling lamps, began to thrash along the road in the other's wake.