But why? Why exactly one hundred thousand dollars? Leaving another half million untouched.

Batman (Adam West)

8 seconds sound clip from Batman (1966) - Zelda the Great (S1E9) TV Series.

You can hear this line at 00:06:18 in the Blu-ray version of the movie.

Quote context

[...]

- We hoped that it might contain identifiable fibers from the bandit's clothing.

- No luck, eh?

- Our hopes were blasted. Lab report, negative.

- I'll take this anyway. Our own equipment at the Bat-cave may prove more revealing.

- Meantime, let's ponder the crook's motive.

- A hundred thousand smackers. That's the motive.

- But why? Why exactly one hundred thousand dollars? Leaving another half million untouched.

- Batman's right. That has some meaning.

- The same strange pattern every year. Precisely a hundred thousand each April 1st.

- Glory be, I've got it. It's to pay his income taxes.

- A loyal taxpayer stooping to criminal methods?

[...]