- You know me?
- Yes. I suppose it's safe to call you by your right name now.

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

You can hear this line at 00:21:48 in the radio play.

Quote context

[...]

- Oh. Well, do come in, please. You must be tired. We can talk in the library.

- My daughter's having an engagement party. I'd rather not disturb her.

- Yes, of course.

- Go right in, please.

- Thank you.

- Sit down.

- Will you have a drink?

- No, thank you.

- Well. So what did you want to see me about... Mr. Hannay?

- You know me?

- Yes. I suppose it's safe to call you by your right name now.

- What about our mutual friend, Annabella?

- She's been murdered.

- I know. Poor girl.

- The police are looking for you.

- Yes, but I didn't do it. I...

- Oh, of course you didn't.

- But why come all this way to Scotland to tell me about it?

[...]