Five—that no vampire shall ever reveal his true nature to a mortal and allow that mortal to live. No vampire must ever reveal the history of the vampires to a mortal and let the mortal live. No vampire must commit to writing the history of the vampires or any true knowledge of vampires lest such a history be found by mortals and believed. And a vampire’s name must never be known to mortals, save from his tombstone, and never must any vampire reveal to mortals the location of his or any other vampire’s lair.