When I peered out of the cover I saw that the other man had joined him and that the idiots were engaged in embracing each other.
I dared not move an inch nearer, and as they talked in a low voice I could hear nothing of what they said.

Nothing except one phrase, which the strange man repeated twice, very emphatically.

'Tomorrow night,' he said, and I noticed that his voice had not the Highland inflection which I looked for.

Gresson nodded and glanced at his watch, and then the two began to move downhill towards the road I had travelled that morning.
I followed as best I could, using a shallow dry watercourse of which sheep had made a track, and which kept me well below the level of the moor.

It took me down the hill, but some distance from the line the pair were taking, and I had to reconnoitre frequently to watch their movements.