- So they invented the witch and zombie act to keep people away.
- While they searched the swamp with a metal-tipped pole.

7 seconds sound clip from Scooby-Doo, Where Are You! - Which Witch Is Which (S1E13).

You can hear this line at 00:19:51.099 in the Blu-ray version of the episode.

Quote context

[...]

- Oh, no! Scooby goofed!

- I'll ungoof him! Got him.

- And we got them!

- Yay! Ha ha ha!

- Thanks to that fast fishing team of Shaggy and Scooby.

- Yeah! Scooby Doo!

- I got to hand it to you kids... finding that missing armored car, after all these years.

- But, uh, who are these two?

- Don't you recognize them, Sheriff?

- Why, it's Zeb and Zeke!

- They were the ones that hijacked the armored car and sunk it in the swamp.

- Then they waited all this time till it was safe to look for it but couldn't find it.

- So they invented the witch and zombie act to keep people away.

- While they searched the swamp with a metal-tipped pole.

- I get it. The pole would make a metallic sound when it hit the armored car.

- Yeah, and then they'd pull it up with the winch.

- They had us fooled for a while with an old smoke screen trick. Show them, Velma.

- Zeke the witch could appear and vanish as if by magic behind a cover of smoke. Watch.

- Well, they sure had everything figured out, but where they're going, I don't think their disappearing act will ever work.

[...]