: In the opening scene, Castle tries on a Halloween costume—a brown duster and holster—that is the exact outfit Nathan Fillion wore as Captain Malcolm Reynolds in Firefly .
: Upon seeing the staked body, Castle quips that "Buffy's visiting the Big Apple," a nod to Fillion’s role as the villain Caleb in Buffy the Vampire Slayer . [S2E6] Vampire Weekend
: Known as "Crow" (Matthew Freeman), the victim was part of an underground vampire fetish community and wore professional ceramic vampire veneers. : In the opening scene, Castle tries on
: Beckett tries to find out why Castle became a mystery writer. He tells her a dramatic story about finding a body as a child, which he eventually admits was fabricated. Notable Pop-Culture References : In the opening scene