Very well. If you will look out of that window you will see two men standing across the street. Look. Please do.

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

You can hear this line at 00:09:18 in the radio play.

Quote context

[...]

- I suppose you're here to dig up some big state secret.

- No. I'm here to save a secret. For England.

- Oh. Go on, please.

- The agent of a certain foreign power is on the point of obtaining a secret vital to your air defence.

- I tracked two of his men to that music hall. Unfortunately, they recognised me. That's why they're after me now!

- You still don't believe me, do you?

- No, frankly, I don't.

- Very well. If you will look out of that window you will see two men standing across the street. Look. Please do.

- All right. I'll play your game a bit further.

- Oh, don't let them see you! Well?

- By jove, you're right! Two of them. They seem to be looking up here.

- Come away, please. Do you believe me now?

- Well, I suppose I must.

[...]