What is the substance of the human soul? If we are to follow scientific theory, is our consciousness, the electrical impulses within the brain. Thought and instinct and choice. Therefore, when we die, our souls will degrade along with our grey matter, disintegrating into the sandy remnants of the earth.
But humanity quails at this image, that there could be no life after death, no resurrection, no grace. What is Jesus Christ but the heavenly version of a vampire? What compels us to worship such an image but the possibility that we could one day be pulled from darkness. A vampire was once human, and in some ways, is still human. And if humanity has an immortal soul, something beyond the electricity in our brains, then a vampire would have a soul still, even one that has been corrupted and made infernal.