Vampires are mythological or folkloric beings who subsist by feeding on the life essence (generally in the form of blood) of living creatures, regardless of whether they are undead or a living person. Although vampiric entities have been recorded in many cultures and in spite of speculation by literary historian Brian Frost that the "belief in vampires and bloodsucking demons is as old as man himself", and may go back to "prehistoric times", the term vampire was not popularized until the early 18th century, after an influx of vampire superstition into Western Europe.
The success of John Polidori's 1819 The Vampyre established the charismatic and sophisticated vampire of fiction as it is arguably the most influential vampire work of the early 19th century inspiring such works as Varney the Vampire and eventually Dracula. However, it is Bram Stoker's 1897 novel Dracula that is remembered as the quintessential vampire novel and which provided the basis of modern vampire fiction. The success of this book spawned a distinctive vampire genre, still popular in the 21st century, with books, films, video games, and television shows. The vampire is such a dominant figure in the horror genre that literary historian Susan Sellers places the current vampire myth in the "comparative safety of nightmare fantasy".