Some version of the hungry dead exists in every culture on earth.  Strange stories of loved ones returning in the night to feed on the lives of those they left behind have haunted humanity for eons.  Over the years in the West, vampires have evolved in the popular consciousness from risen, stinking corpses to romantic, tragic characters.  Finally, in the modern age, we have those who believe they themselves are vampires, be they sanguine vampires feeding on blood or the psychic variety who claim to live off of the energy of others.