Vampires are one of the most popular monsters in literature, and they represent a variety of things. Sometimes they represent the dangers of unchecked desire, as they are often portrayed as seductive and alluring creatures who lure their victims in with their promises of eternal love and then drain them of their lifeblood. Other times, they represent the dark, hidden side of human nature, the part of us that is capable of terrible violence and bloodlust. They can also represent the fear of death, as they are often portrayed as undead creatures who are immune to the ravages of time. Whatever they represent, vampires are sure to continue to be a popular monster in literature for many years to come.