If there's one name you associate with the Horror genre it has to be Wes Craven who has written, directed and produced countless movies including the best known of horror franchises like Scream, Nighmare on Elm Street, Dracula and many more!
It appears Castle has snagged him for the upcoming episode of Castle "Scared to Death" due to air March 18.
"Scared to Death" is the perfect venue for an appearance by Craven. We don't know exactly what role Craven will play in the story but he will make an appearance in the episode as himself.
According to ABC's episode summary:
When a young woman appears to have literally been scared to death three days after watching a “haunted” DVD, Castle and Beckett delve into one of their creepiest cases yet. To make matters worse, Castle becomes convinced that he too is marked for death when he accidentally watches the cursed video. Master of horror Wes Craven makes a special quest appearance.