- Allow me to introduce Sir Colonel Sharki of the Lugash Secret Police.
- Aha. That explains the gun.

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

You can hear this line at 01:43:51.192 in the Blu-ray version of the movie.

Quote context

[...]

- Now tell me, how did you find out it was me?

- Well, there's something about a wife, even with a beard.

- Now, come on, darling. It's time to get dressed, pack and go home. Now, come on, darling.

- Forgive the intrusion, madam, but you see before you a very disillusioned man.

- Disillusioned and with a gun.

- He's obviously not with the hotel.

- No, no.

- Allow me to introduce Sir Colonel Sharki of the Lugash Secret Police.

- Aha. That explains the gun.

- I foolishly believed that your husband was a man of integrity.

- Oh, that was foolish.

- Oh, thank you.

- You see, your husband and I, we had an arrangement. He was to do certain things, and if he didn't...

- You were to do certain things.

- Regrettably.

- Coffee, darling. I'm sorry. There's only one cup.

- I know I'm going to be sorry I asked this, but want to give me a for instance?

[...]