It was a fair weapon in a fight against crime. You know that as well as I do.

Robin (Burt Ward)

6 seconds sound clip from Batman (1966) - A Death Worse Than Fate (S1E10) TV Series.

You can hear this line at 00:06:28 in the Blu-ray version of the movie.

Quote context

[...]

- Yes.

- This line better not be traced, my friends... Or it'll be very sad for Mrs. Harriet Cooper.

- How is she?

- Oh, well, quite well... At least as well as one can be in a straitjacket over a fatal pool of flaming oil.

- You devil! How could a woman stoop to such a trick?

- Talk of tricks. What about that phony Star of Samarkand this morning?

- It was a fair weapon in a fight against crime. You know that as well as I do.

- Enough of this prattle.

- Mr. Wayne, listen to my instructions about the ransom.

- Wait.

- What? Are you trying to give me orders?

[...]