Undead is a paranormal romance book series that is written by MaryJanice Davidson and published through Berkley Books. The series was first launched in 2004 with the publication of Undead and Unwed, and as of 2016 there are fifteen books in the series, and several accompanying short stories. Davidson attributes the popularity of the series to the absurdism, tone, and believability of the characters. The series was a reaction to what Davidson saw as cliches and unrealistic characters in paranormal romance novels. Source: Wikipedia (en)