- Oh, I can't go any further. I've lost my shoe.
- Where?
- Oh, back there.
- Well, forget it.

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

You can hear this line at 00:29:53 in the radio play.

Quote context

[...]

- Now's our chance. We'll make a run for it.

- Run? How can we?

- Come on. When I say jump, jump and run for your life.

- Yes, but they'll catch us!

- Go on, jump!

- Hey look, they're gettin' away! Stand where you are! There they go! Give it to 'em!

- They're shooting! Come on, you little fool, run for it!

- Please, don't go so fast. You're hurting my wrist.

- Shut up.

- Oh, I can't go any further. I've lost my shoe.

- Where?

- Oh, back there.

- Well, forget it.

- All right, sit down... sit down for a while.

- Do you - think we've lost those men?

- Oh, it's as black as pitch on this moor. They'll never find us now.

- You know this is all very silly. You can't escape. What chance have you got handcuffed to me?

- Keep that question for your husband when you get one.

[...]