*** EPISODE CHANGE ***

CASTLE & BECKETT SEARCH FOR A ZOMBIE KILLER, ON ABC'S "CASTLE"

"Undead Again" - 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 -- on "Castle," SATURDAY, AUGUST 11 (10:00-11:00 p.m., ET), on the ABC Television Network. (Rebroadcast. OAD: 4/30/12)

Note: This episode replaces "47 Seconds."

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Susan Sullivan as Martha Rodgers, Molly Quinn as Alexis Castle, Penny Johnson Jerald as NYPD Captain Victoria Gates, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, and Seamus Dever as NYPD Detective Kevin Ryan.

Guest Cast: Arye Gross as M.E. Perlmutter, Ryan Doom as Tom Williams, Tiffany Dupont as Greta Mastroianni, and Josh Braaten as Kyle Jennings.

"Undead Again" was written by Christine Boylan and directed by Bill Roe.

"Castle" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1 channel surround sound. This program carries a TV-PG,L,V parental guideline.

For more information on "Castle," visit ABC.com/Castle