When Castle and Beckett investigate the murder of a man with human bite marks on his body, Castle’s wild theories start flying. But none are as wild as what their only witness insists happened – a Zombie attack. As the evidence pointing towards an undead assailant piles up, the team plunges into New York’s Zombie subculture to find the killer and bring him in — dead, undead or alive.
Air date: April 30, 2012 / Directed by John Terlesky / Written by Christine Boylan
Guest Cast: Arye Gross as M.E. Perlmutter, Ryan Doom as Tom Williams, Tiffany Dupont as Greta Mastroianni, and Josh Braaten as Kyle Jennings.