I wonder if it has anything to do with Sharon's disappearance.
3 seconds sound clip from Scooby-Doo, Where Are You! - What the Hex Going On (S1E6).
You can hear this line at 00:13:04.048 in the Blu-ray version of the episode.
Quote context
[...]
- Zoinks! The door! Hey, we're locked in!
- Well, let's hope there's a secret way out of here. Start tapping on the walls.
- Hey, like, what happened to Scooby?
- He was right there a second ago.
- You did it, Scooby! You found the way out!
- I did? Well, Scooby Dooby Doo!
- That secret passage was a shortcut to the Wetherby Estate.
- I wonder if it has anything to do with Sharon's disappearance.
- I don't know, but maybe we'll find the answer here at the swami's place.
- It looks like the swami's out swami-ing somewhere else.
- Then I guess he won't mind if we take a look around.
- Daphne, not the storage closet!
[...]