Castle - Season 2 Episode 6
Vampire Weekend

As Halloween approaches, Castle and Beckett are called to a graveyard where the body of a young man sporting vampire fangs has been discovered with a wooden stake driven through his heart. Their investigation takes them deep into the heart of New Yorks underground vampire fetish community, where they learn that the motive for the victims murder may be hiding within the pages of the graphic novel he was writing before his death.