- Did you think I was never coming?
- Not exactly, but I was getting nervous waiting.

5 seconds sound clip from the The 39 Steps (1937) classic radio play.

You can hear this line at 00:47:04 in the radio play.

Quote context

[...]

- Come on, we'll get the next train for London.

- You wish to order now, sir?

- No. No, thank you. I'm waiting for someone.

- I beg your pardon, sir. Your face looks familiar. Are you in the cinema?

- No, I'm not.

- Bring me a bottle of ale, will you?

- Very good, sir.

- Oh, make that two please.

- Yes, miss.

- Pamela! Sit down.

- Did you think I was never coming?

- Not exactly, but I was getting nervous waiting.

- Well, what happened? Did you go to Scotland Yard?

- Yes.

- Well?

- Prepare yourself for a shock.

- They've checked every possible channel. The Air Ministry are positive that no papers are missing that would be of any possible use to spies.

- But that's incredible. Are you sure?

[...]