            Hermione forced back the urge to smirk. "A ghost is the imprint of a departed soul left upon the earth," she explained in the same words her potions master once had. "You told me you wanted me to experiment with a soul, not a living soul. Seeing as I already tested the living aspect of passing through the Veil, the soul aspect is the logical next step. Minus the risk for possible death, seeing as he or she will already be...well, dead."