Don't Fool With a Phantom - S2-E8
Continuity mistake: The gang find Jonny tied up in a chair and he says it wasn't a publicity stunt. Both his arms are tied up to his sides by the rope. It cuts from the close up to show them all again, and suddenly Jonny is holding his hand to his head and Fred is suddenly pulling on the rope, his arm outside of the rope. (00:02:45)
Don't Fool With a Phantom - S2-E8
Continuity mistake: When the door to Mr. Grisby's house opens, Shaggy and Scooby have their back to it with Shaggy holding Scooby's head. It cuts to a different angle, and instantly Shaggy has let go of Scooby and they are facing the door. (00:05:10)
Don't Fool With a Phantom - S2-E8
Revealing mistake: When Fred makes a joke about the dummies at the end of the episode, Daphne doesn't have a neck. (00:20:55)
Don't Fool With a Phantom - S2-E8
Continuity mistake: Velma gets mad and stomps her foot, activating a secret switch. The floor is made of square and rectangular stones. The angle changes to show her Fred and Daphne, and suddenly the stones are of random organic shapes. (00:12:50)
Don't Fool With a Phantom - S2-E8
Continuity mistake: After the mystery is solved, the gang are driving away in the Mystery Machine. Shaggy and Scooby are in the back marveling at their wax dummies. Velma, Daphne, and Fred are in the front seat and can look back at them. But when it shows an angle from in front of them, the inside of the van behind Fred, Daphne and Velma can't be seen, only a solid gray wall where you should see Scooby, Shaggy, and their dummies, and even the back doors of the van. (00:20:50)
Don't Fool With a Phantom - S2-E8
Continuity mistake: Fred begins telling the gang his plan for trapping the Wax Phantom. They are standing at a window with Fred on the right, Daphne in the middle, and Velma on the left with Shaggy behind them. It cuts to a view from behind, and suddenly Daphne and Velma have switched spots, and Shaggy is off to the side. (00:17:15)
Don't Fool With a Phantom - S2-E8
Continuity mistake: In Mr. Grisby's house, Shaggy says "what a place to live," and Mr. Grisby is shown to be on the left side of him, Scooby and Velma with the crystal ball on their left. It cuts to a different angle as Velma says "it's a nice place" and Mr. Grisby is suddenly on the same side as the crystal ball with his hand on it. (00:05:30)
Chosen answer: A ghost wouldn't have to keep any food in the fridge - they don't need to eat. So it is one thing that proves the ghost is not a ghost.