- You think they'll find him? He must be in New York!
- Probably is.

5 seconds sound clip from the The Thin Man (1936) classic radio play.

You can hear this line at 00:34:07 in the radio play.

Quote context

[...]

- Clyde Wynant is guilty of both of those murders.

- Maybe.

- What?

- Fifty'll still get you a hundred.

- I say Wynant's innocent.

- You can say what you want, but I'm spreading a dragnet for that guy over every town in these United States! And I'll get him, too!!

- Calling all cars! Cover all roads leaving the city, pick up tall thin man with white hair, last seen wearing dark black suit! Calling all cars!

- You think they'll find him? He must be in New York!

- Probably is.

- Oh, it's getting me down.

- I saw Dorothy today. She's broken off her engagement.

- What for?

- Don't ask me, she was a little hysterical.

- Something about not wanting to ruin her fiancées life, daughter of a murderer and all that.

- Hmm, poor kid.

- Well, see you later darling!

[...]