“They were not,” I said readily. “They were made in London. I got them frae the gentleman that was here last year for the shootin’. What was his name now?” And I scratched a forgetful head. Again the sleek one spoke in German. “Let us get on,” he said. “This fellow is all right.”

They asked one last question.

“Did you see anyone pass early this morning? He might be on a bicycle or he might be on foot.”

I very nearly fell into the trap and told a story of a bicyclist hurrying past in the grey dawn. But I had the sense to see my danger. I pretended to consider very deeply.

“I wasna up very early,” I said. “Ye see, my dochter was merrit last nicht, and we keepit it up late. I opened the house door about seeven and there was naebody on the road then. Since I cam up here there has just been the baker and the Ruchill herd, besides you gentlemen.”

One of them gave me a cigar, which I smelt gingerly and stuck in Turnbull’s bundle. They got into their car and were out of sight in three minutes.

My heart leaped with an enormous relief, but I went on wheeling my stones. It was as well, for ten minutes later the car returned, one of the occupants waving a hand to me. Those gentry left nothing to chance.

I finished Turnbull’s bread and cheese, and pretty soon I had finished the stones. The next step was what puzzled me. I could not keep up this roadmaking business for long. A merciful Providence had kept Mr Turnbull indoors, but if he appeared on the scene there would be trouble. I had a notion that the cordon was still tight round the glen, and that if I walked in any direction I should meet with questioners. But get out I must. No man’s nerve could stand more than a day of being spied on.

I stayed at my post till five o’clock. By that time I had resolved to go down to Turnbull’s cottage at nightfall and take my chance of getting over the hills in the darkness. But suddenly a new car came up the road, and slowed down a yard or two from me. A fresh wind had risen, and the occupant wanted to light a cigarette.

It was a touring car, with the tonneau full of an assortment of baggage. One man sat in it, and by an amazing chance I knew him. His name was Marmaduke Jopley, and he was an offence to creation. He was a sort of blood stockbroker, who did his business by toadying eldest sons and rich young peers and foolish old ladies. “Marmie’ was a familiar figure, I understood, at balls and polo-weeks and country houses. He was an adroit scandal-monger, and would crawl a mile on his belly to anything that had a title or a million. I had a business introduction to his firm when I came to London, and he was good enough to ask me to dinner at his club. There he showed off at a great rate, and pattered about his duchesses till the snobbery of the creature turned me sick. I asked a man afterwards why nobody kicked him, and was told that Englishmen reverenced the weaker sex.