Okay. Not techinically Halloween, but with Psych's bizarre schedule (mid-summer start), it's as close as you get. The haunted house is a Halloween classic. The best part is always trying to figure out which of the characters are puppets or fake, and which ones are live people waiting to jump out and scare the jee-willigers out of you.
Check out the writer commentary from the episode.
Season 5, Episode 11: "In Plain Fright"
Shawn and Gus stumbled upon a murder at a haunted house ride at a theme park. They have to sneak back in to find the body while hilarity ensues.
For fans of the episode, check out some outtakes.
