Well, well... if it isn't our old friend Bluestone the Great, an ex-magician wanted in six states.
6 seconds sound clip from Scooby-Doo, Where Are You! - Hassle in the Castle (S1E3).
You can hear this line at 00:19:22.728 in the Blu-ray version of the episode.
Quote context
[...]
- Aww.
- And so, when the fog lifted, we spotted your beached boat and decided to investigate.
- This? This is the end of the mystery.
- Well, well... if it isn't our old friend Bluestone the Great, an ex-magician wanted in six states.
- But what is he doing Haunted Isle?
- He must have heard the legend of the Vasquez treasure. Everybody's after it.
- And when he saw us run aground, he wrote a threatening message trying to scare us away.
- Well, his scaring days are over.
[...]