Abnormally Normal
In some stories vampires may enter a home only if they have been invited, and in others they may be distracted by the scattering of objects such as seeds or grains that they are compelled to count, thereby enabling potential victims to escape.
History
Learn using chemistry about the natural mummification of adipocere mummies, the ectoplasm, and vampires
The chemistry of mummies, ghosts, and vampires.
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Creatures with vampiric characteristics have appeared at least as far back as ancient Greece, where stories were told of creatures that attacked people in their sleep and drained their bodily fluids. Tal