Darkened Souls

Some humans are possessed by certain spirits but the possessions occur slowly. Crystal is one of the poor souls to be chosen by a spirit. Because of this, her past was darkened and also her future. A normal life was no longer optional. Now Crystal works for the Institute, a place where people with supernatural powers live and get missions to stop evil. Even though they tried to keep Crystal a secret to some of the evil beings, someone knows about Crystal and wants her spirit possessed soul.