Residue

"When I was still a young boy, I took a job on an expedition to excavate a small Barrow in Wissenland. It had long ago collapsed in on itself, leaving little more than a muddy pit in the ground. Local folklore said the place was haunted or cursed, yet we could find no credible evidence of any Undead activity. So when one of the camp guards stabbed the cook in a fit of rage, we assumed he had been drunk. We tied him up and sent him to Pfeildorf to stand trial. When one of the farmhands we had hired to help with the digging disappeared during the night, we started to get worried. When the Professor in charge of the dig was found with his wrists slit open the next morning, we decided to leave."

- Heinrich Johannes, procurer of ancient artefacts

Residues are sometimes created when another form of Spirit or Wraith begins to fade away, the will that maintained their Undead state incapable of sustaining them any longer. Others are formed when a particularly malicious or miserable person dies who lacks any particular reason to remain in the land of the living. They appear to be vaguely humanoid clouds of dark smoke, though they are usually invisible to mortal eyes. They are little more than a bundle of negative emotions, possessing an almost instinctual desire to spread hatred and rage to others.

Source
Residuos [[Category:R]]
 * Warhammer Fantasy RPG 2nd ED -- Lure of the Liche Lord
 * pg. 116
 * pg. 117