What are you talking about? I don't understand. Is this some sort of a Halloween joke?

5 seconds sound clip from Knight Rider - Halloween Knight (S3E5).

You can hear this line at 00:41:44.511 in the Blu-ray version of the episode.

Quote context

[...]

- I don't want to hurt you, Bonnie. I just think you're so nice, and you're so beautiful, Bonnie.

- Hello, Bonnie.

- I hope I didn't frighten you.

- What are you doing in here? I thought you were tied up with business.

- The remote communication system is in here, Bonnie and my business... is you.

- What are you talking about? I don't understand. Is this some sort of a Halloween joke?

- You think I risked all this for a joke?

- No, Bonnie, I want that key.

- What key? What are you talking about?

- Where's Bonnie? I didn't hurt her. I just wanted to tell her how much I liked her.

- For heaven's sake, man, where is she?

- She locked herself in one of those rooms down that hallway.

- My office.

[...]