Castle Undead Again (2009–2016) Online
Castle and Beckett investigate a man's murder where the victim has human bite marks on his body. While Castle has some wild theories, none of them are as strange as what their only witness insists happened. The man was killed in a Zombie attack.
| Episode cast overview, first billed only: | |||
 | Nathan Fillion | - | Richard Castle |
 | Stana Katic | - | Kate Beckett |
 | Susan Sullivan | - | Martha Rodgers |
 | Jon Huertas | - | Javier Esposito |
 | Seamus Dever | - | Kevin Ryan |
 | Tamala Jones | - | Lanie Parish (credit only) |
 | Molly C. Quinn | - | Alexis Castle (as Molly Quinn) |
 | Penny Johnson Jerald | - | Captain Victoria Gates (credit only) |
 | Arye Gross | - | M.E. Sidney Perlmutter |
 | Ryan Doom | - | Tom Williams |
 | Tiffany Dupont | - | Greta Mastroianni |
 | Josh Braaten | - | Kyle Jennings |
 | Brandon Keener | - | Charlie Coleman |
 | Kevin Symons | - | Mike Matthews |
 | Kevin Sheridan | - | Paul |
This episode reveals that Castle comes up with his crazy theories and wild speculation just to get on Beckett's nerves.