The cousins were scared away fast.
2 seconds sound clip from Scooby-Doo, Where Are You! - A Night of Fright Is No Delight (S1E16).
You can hear this line at 00:20:03.044 in the Blu-ray version of the episode.
Quote context
[...]
- I can't steer this crazy machine. We'll take the shortcut.
- Hang on!
- Got 'em!
- Looks like these ghosts are all washed up.
- Well, there they are, Sheriff... Mr. Creeps and his partner Mr. Crawls.
- They were trying to scare all the heirs off the island.
- Then no one would spend the night, and they would keep control of the fortune.
- First, Creeps pretended to be the phantom and made it seem like the house was haunted.
- The cousins were scared away fast.
- Then they put dummies that looked just like them in the coffins.
- Bah!
- So did painting themselves like green ghosts.
- Well, where they're going, Creeps and Crawls could use a good lawyer.
- Here it is. It all belongs to you now, Scooby... $1 million.
- Huh?
- Oh, no. Wouldn't you know it? All in Confederate money.
[...]