- And if I do catch the thief?
- Oh. I have every confidence that you will. How does the saying go, Set a thief to catch a thief?

— Sir Charles Litton (Christopher Plummer)

18 seconds sound clip from the The Return of the Pink Panther (1975) movie soundboard.

You can hear this line at 01:05:06.163 in the Blu-ray version of the movie.

Quote context

[...]

- You have a bad leg?

- Oh, it's nothing.

- If you can prove you're not guilty, then I am in serious trouble.

- Because of the religious significance of the Pink Panther, it's imperative to the government that sooner or later the thief be apprehended and the jewel returned.

- But you would prefer it to be later than sooner?

- I can't tell you how reassuring it is to know that we understand each other so well.

- And if I do catch the thief?

- Oh. I have every confidence that you will. How does the saying go, Set a thief to catch a thief?

- Good night, Dr. Tanney.

- You hate him?

- Yes, I hate him all right.

- How much do you hate him?

- How much? How high is up? I hate every little molecule in his body.

- You'd like to kill him?

- To kill him? Oh, God, yes, to kill him.

- Why don't you?

- Oh, to kill him. What? Why don't I? It's not so easy. You try it.

- I mean, kill him psychically.

- Ridiculous.

- Why?

- Because there's nothing I can do psychically that would have the slightest effect on him. Why not? Because he's got the brain of a minkey.

[...]