Claim: The Vampire Diaries is based on a book series by an American author.
Evidence: The Vampire Diaries is an American supernatural drama television series developed by Kevin Williamson and Julie Plec , based on the popular book series of the same name written by L. J. Smith.
Lisa Jane Smith , known professionally as L. J. Smith , is an American author of young adult fiction best known for her best-selling series The Vampire Diaries , which has been turned into a successful television show.