Ghost

Ghosts are supernatural entities formed by the psychic footpints of people who are dead, as opposed to lingering souls.

Descrption
A ghosts power may vary according to the strength of the deceased's psychic presence, varying from shades to very substantial ghosts, such as Agatha Hagglethorn or The Nightmare.

Most ghosts dwell at the very edges between the Nevernever and the mortal realm, though they can cross over to the mortal realm with relative ease at graveyards and sites of importance during their lives or during Halloween.

Abilities
As mentioned above, not all ghosts are of equal power. Weaker shades may just have phantom-like forms, while others may be more defined and substantial. More powerful ghosts may interact with the mortal realm more actively than weaker ghosts. Agatha Hagglethorn was able to turn off the power in an entire ward at a hospital, enchanting the entire floor into a sleep, as well as using her spirit-self to suffocate babies.

Ghosts may also be summoned by ectomancers in order to contact their loved ones, or to gather information.

Weaknesses
Ghosts cannot roam the earth between sunrise and sunset, nor can they wander on holy ground. Ghosts are also vulnerable to what Harry calls 'ghost dust', both in and out of the Nevernever.

In the series

 * Grave Peril
 * Dead Beat