Well, there's something about a wife, even with a beard.
5 seconds sound clip from the The Return of the Pink Panther (1975) movie soundboard.
You can hear this line at 01:43:24.107 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.
- I foolishly believed that your husband was a man of integrity.
[...]