When Asa Shanks gives directions to the Gang, he mentions taking a left or right at the fork in the road. However, when he says left, he points right and when he says right he points left.
How did Shaggy manage to survive balancing on a thick wire, and then a big fall landing in shallow water?
If Asa Shanks wanted to make the gang avoid going past the Haunted Mansion, why couldn't he just pretend that the right fork leads them nowhere?
Although Shaggy, Scooby, and the headless specter all ride on balloons out of the well, it would be impossible to hold their weight in real life.
How can Shaggy, Scooby and Velma slide down a bannister while wearing suits of armor?
What happened to the rug on the staircase? When Shaggy lifts up the rug to deter the headless spectre, it looks like it went back into place. However, a few moments later, when Velma, Shaggy and Scooby are chased down the stairs by the spectre, the rug is no where to be found -- it is neither on the stairs or at the bottom of the staircase.
Asa Shanks: And I'da found it if it wasn't for you snoopers!
(deciding on which road to rake at the fork)
Shaggy: Let's flip a slice of bologna to decide.
Shaggy: Heads we go to the left and I eat it...tails we go to the right and I eat it.
Velma: How can you have heads and tails on a slice of bologna?
Shaggy: Heads is the mustard side...tails is plain!
Shaggy: Help! I'm drowning! Call the Coast Guard!
Velma: Stand-up. The water's only knee deep.
Daphne: (points at the footprints) Look at that! The tracks go different directions.
Shaggy: I've seen guys do the splits, but this is ridiculous.
Fred: Let's follow them.
Shaggy: You guys go ahead. Scoob and me will stay here with old face-in-the-box.
Velma: Aren't you curious?
Shaggy: Not a bit. Scared? Yes. Curious? No.
Velma: Shaggy, the non-material embodiment or essence or organism that's seen as a specter, wraith, or apparition has been scientifically proven to be a sheer myth. In other words, there's no such thing as a ghost!
Shaggy: Yeah, but does the ghost know that?
Daphne: (looking at the dilapidated old sign) I wonder what it says.
Shaggy: It says twenty-four thousand miles to China. (points downward) That way.
The Headless Spectre appears in Scooby Doo Night of 100 Frights.
Villian #1: Penrod Stillwall
Reason: He wanted to scare snoopers off so he could search for his hidden family fortune.
Villian #2: Asa Shanks
Reason: He was searching for the Stillwall fortune.
When ABC reran this episode 1977 through 1984, network censors cut out a few seconds of footage during the chase song in which Shaggy, Scooby and Velma ride a makeshift bicycle (actually an old knitting loom) through a window and onto a utility wire before bouncing off the top of a pole and into a well. The edit has them riding out the window and immediately falling into the well.
Hal Smith provides several incidental roles in this episode.
The song Love the World, which is featured in this episode, appears on the album Scooby-Doo's Snack Tracks: The Ultimate Collection.