He did so and drew his chair away from the window, and I followed his example.

I was wrong about not being able to sleep. After a time I dozed off and, at Burroughs’ suggestion, lay down on a sofa close to him and went off into a sound sleep.

From a dream that I was being smothered I awoke to find a hand pressed tightly on my mouth.

“Hsh! Wake up. Something’s happening,” whispered Burroughs.

I looked round the room. It was almost dark, for the moonlight was no longer streaming through the window. I had evidently been asleep some hours.

Then Burroughs caught my sleeve and pulled it upwards. A sign to me to get up.

When I stood up he put his lips to my ear and whispered: “You stay this side of the window. I’ll go to the other.”

Without making a sound he crept away from me.

I stood listening intently, and presently bent down and peered cautiously at the window.

There was neither sign nor sound of anything.