And we haven't seen Sharon or her uncle either.
3 seconds sound clip from Scooby-Doo, Where Are You! - What the Hex Going On (S1E6).
You can hear this line at 00:08:38.851 in the Blu-ray version of the episode.
Quote context
[...]
- Wow! How soggy can a guy get?
- If there's one thing I can't stand, it's taking a bath in a haunted house.
- Whether you know it or not, Scooby, you found our first clue.
- I did?
- Sure.
- Whoever heard of a ghost needing a watchdog to scare anybody away?
- Like, you mean there isn't any ghosts?
- Well, I haven't seen any... yet.
- And we haven't seen Sharon or her uncle either.
- Hey, was Uncle Stuart wearing a blue suit, red tie, and tennis shoes?
- Then I think we found him, only he looks a little older now.
- Wow! I guess that ghost wasn't kidding.
- That's just about as old as you can get.
- It sure would help if we could find another clue.
- Him.
[...]