Oh, but you knew about it afterwards, and put it to good use, eh?
6 seconds sound clip from the Batman: Mask of the Phantasm movie soundboard.
You can hear this line at 00:53:31.555 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, Artie, I'm crushed. How the high and mighty forget!
- Don't you remember... you, me, Sallie, and the gang?
- What are you talking about? I never met them or you.
- I worked for Beaumont. I didn't know what he was doing.
- Oh, but you knew about it afterwards, and put it to good use, eh?
- To find out who's iced the old gang.
- Haven't you read the papers? It's Batman!
- Nnnnnnnn! Wrong! It ain't the bat. Nope, nope, nope.
- I've seen the guy. He looks more like the ghost of Christmas future. Nowhere near as cute as Batboy.
- You're saying it's someone else?
[...]