And look at that. There are 2 paintings exactly alike.
5 seconds sound clip from Scooby-Doo, Where Are You! - What a Night for a Knight (S1E1).
You can hear this line at 00:15:32.909 in the Blu-ray version of the episode.
Quote context
[...]
- It's paint. And look... A trail of it leads down the hallway. Come on, follow that paint.
- The trail of paint ends here at the mummy case.
- Come on, Shaggy, help me open it.
- Uh, don't like surprises, especially spooky ones.
- Somebody sure is a messy housekeeper.
- And look at that. There are 2 paintings exactly alike.
- Are you thinking what I'm thinking?
- Right, Velma. This just about solves the mystery.
- It does?
- No time to explain now, Shaggy. We gotta get the sheriff.
- Let's take this back way out.
- Leave it to Daphne to pick the wrong door.
[...]