As a culture comes to face its own mortality, it asks itself what comes after death. Most believe in an afterlife that offers paradise for the just and damnation for the wicked. A few cultures teach that if a life is ended unjustly, the victim's soul lingers among the living to exact retribution. Accounts of these spiritual creatures are as varied as the races that give them, but all agree that these beings are powerful, unwavering, and deadly. Lurking in the darkness, they bring death to the wicked and justice to the guilty.