It may have been going on from the start, but it was not till my third month at Blaauwildebeestefontein that I found it out.

One night I was going to bed, when suddenly the bristles rose on the dog's back and he barked uneasily at the window.
I had been standing in the shadow, and as I stepped to the window to look out I saw a black face disappear below the palisade of the backyard.

The incident was trifling, but it put me on my guard.

The next night I looked, but saw nothing.

The third night I looked, and caught a glimpse of a face almost pressed to the pane.