ghost

A ghost is a noncorporeal undead that typically results when a mortal dies with unfinished business or in extreme physical or emotional distress. This spirit may be tied to a location, an item, or a person, and can cause phenomena near its manifestation such as mysterious noises, objects moving around without apparent physical intervention, or even terrifying visions of the manifesting ghost.

While it is possible to communicate with a ghost using certain spells or rituals, one must remember that the ghost is an echo of the original mortal, often locked in a certain emotional state and usually irrational. If a ghost's unfinished business is completed, it is likely to move on voluntarily. Otherwise, magic may be required to break the ghost's link with the mortal world.