We know you're up to some super-crime. And we're going to watch you.
7 seconds sound clip from the Batman (1966) TV series - Fine Feathered Finks (S1E3).
You can hear this line at 00:17:16 in the Blu-ray version of the movie.
Quote context
[...]
- I only make the umbrellas. What they do after they leave here is hardly my affair. Now, is it?
- A tricky little creature. He's right.
- Darn it! Not a thing to hold him on.
- Yet.
- Beg pardon? Were you saying something?
- You've outsmarted us this time, Penguin. But don't get too confident.
- We know you're up to some super-crime. And we're going to watch you.
- Right.
- Back everyone. Back! Take cover! It could be explosive.
- Wow!
- Curious. It looks like an ordinary umbrella except, for it's unusual size.
- Look up there, Batman! Hanging from the handle.
[...]