Oh, then it was you. Thanks, I wasn't sure.
4 seconds sound clip from the After the Thin Man (1936) movie soundboard.
You can hear this line at 01:35:22 in the DVD version of the movie.
Quote context
[...]
- I got restaurant to run. No time for this.
- If you're worried about the place, we'll have it closed up for you.
- Dancer. We almost ran into each other other earlier this evening.
- That so? Too bad I missed you.
- Oh, then it was you. Thanks, I wasn't sure.
- Then why don't you send a messenger? What's the matter with you?
- Shut up, you! Cut out the chatter!
- Well, Nicholas? I might have known that you were at the bottom of this.
- Come right in, aunt Katherine.
[...]