Briannarentas

Continuity mistake: When the gang first drives up to the house, there are no cats on the front porch. Then a few seconds later, as Fred points out, "this place is crawling with cats".

Continuity mistake: The boss enter the storage room carrying the clipboard in his left hand. In the next shot, when Shaggy says "Like, hi boss" it's in his right hand.

Continuity mistake: Fred falls into the secret passageway while carrying a lantern with him. In a few later shots of him on the ground, the lantern is gone.