“Only just to get a drink and fill up with petrol. I wanted to get back. The lady and gentleman were evidently expected, and seemed in a great hurry.”

“Why?”

“Well, near Alconbury the engine was misfiring a little, and I stopped to open the bonnet. When I did so, the lady put her head out of the window, highly excited, and asked how long we were likely to be delayed. I told her; then I heard her say to the gentleman, ‘If they are away before we reach there, what shall we do?’”

“Then they were on their way to meet somebody or other—eh?”

“Ah! that I don’t know, sir. I drew up in the yard of the hotel, and they both got out. The lady hurried in, while the gentleman paid me, and gave me something for myself. It was then nearly four o’clock in the morning. I should have been back earlier, only I had a puncture the other side of Hatfield, and had to put on the ‘Stepney.’”

“I must go to Stamford,” I said decisively. Then I put something into his palm, as well as into that of the page-boy, and, entering a taxi, drove back home.

An hour later I sat beside my own chauffeur, as we drove through the steadily falling rain across Hampstead Heath, on our hundred-mile journey into Lincolnshire.

We both knew every inch of the road, having been over it many times. As it was wet, police-traps were unlikely, so, having negotiated the narrow road as far as Hatfield, we began to “let her out” past Hitchin, and we buzzed on over the broad open road through Stilton village. We were hung up at the level-crossing at Wansford, but about half-past three in the afternoon we swept over the brow of the hill beneath the high wall of Burghley Park, and saw beneath us the roofs and many spires of quiet old Stamford.

Ten minutes later we swung into the yard of the ancient George, and, alighting, entered the broad hall, with its splendid old oak staircase, in search of the manageress.