He had a glimpse of the Rolls Royce coming back, and signalled to Ware. The doctor closed the bonnet and took his seat at the wheel. The inspector slipped into the place by his side and as he made himself as inconspicuous as possible, the little two seater slid into motion. There was a doubt as to which way the big car would turn at the gates. That had to be risked. The idea was to saunter by close upon it as it emerged, as though on affairs that had no concern with its occupants and thereafter to hold it in sight. Of course if it took the contrary direction to that in which they were headed there would be delay. But the doctor was confident that in any case he could overhaul it.

Fortunately they had guessed right. Barely fifty yards in front of them the big car took the turn out of the gates to the left. It was moving with deceptive speed, and Ware pushed down the accelerator. In five minutes the two seater was swaying over the not too good road like a boat at sea.

“It will make the speed,” said the doctor, clinging grimly to the wheel, “but you can’t expect a light car to hold the road like a Rolls.”