Network

[It's a short message he jots down in the books, in the same cursive hand he is probably by now known to use in his writing.]

There are wraiths outside tonight. As I recall, they'll follow you if you're alone, so if you must come outside, travel in pairs if you can. If you can't, I've just been told having a source of light will cause them to hesitate, but it won't keep you entirely safe from them.

Be mindful of your surroundings.