Wraiths tend to live in places where the dead reside. They are a kind of bottom-feeder, feeding on human remains. That being said, live humans still are not safe from them.

If you feel an exceptional chill near a place where the dead are housed, you know a wraith is near. Light and warmth will keep them at bay, but only temporarily. With enough time or numbers, they will still be able to come after you Leave ASAP and report the sighting to your nearest demonologist.

The exorcism of wraiths is near impossible without razing the general vicinity, which is not typically ideal. Usually it is easier to use inscribed urns to restrict the movements and feeding practises of wraiths, keeping them in a state where they are much less likely to harm the living.