It started when a ghostly voice called out from the old mansion. I had to obey it. It drew me out of the house. I was in a trance.
13 seconds sound clip from Scooby-Doo, Where Are You! - What the Hex Going On (S1E6).
You can hear this line at 00:03:21.842 in the Blu-ray version of the episode.
Quote context
[...]
- You mean the Kingston Mansion? Maybe we'd better go up there and see.
- Like, you know, there's no sign of him anywhere.
- Look! Someone's in the shadows!
- Aah!
- I went past the Kingston Mausoleum and finally into the old mansion.
- And there is where I saw the ghost of Elias Kingston.
- That's when he made me an old man as a warning to you all.
[...]