Other mistake: Actor Robert Pine's English accent comes and goes in his scenes with actress Debbie Watson.
Other mistake: The Dragula Herman is driving begins spinning out of control before he hits the oil slick.

Directed by: Earl Bellamy
Starring: Fred Gwynne, Al Lewis, Butch Patrick, Yvonne De Carlo
Other mistake: Actor Robert Pine's English accent comes and goes in his scenes with actress Debbie Watson.
Other mistake: The Dragula Herman is driving begins spinning out of control before he hits the oil slick.
Audio problem: Herman drives the Dragula off the property of Munster Hall onto a dirt road and accelerates, but the tires make the sound of screeching tires on asphalt.
Herman: "Car 54, Where Are You?" - when finally discovering the secret of Munster Hall.
Trivia: Fred Gwynne (Herman Munster) and Al Lewis (Grandpa/Count Dracula) worked together previously on "Car 54, Where Are You?" This is referenced playfully after Herman and Grandpa discover the secret of Munster Hall.