Cathy will understand. It's an old 'joke' between us.

6 seconds sound clip from the Wuthering Heights (1939)) classic radio play.

You can hear this line at 00:31:27 in the radio play.

Quote context

[...]

- Well, I must say I've never seen such a complete change in a man. You seem to have prospered. You must have gone to America.

- I did.

- We wondered where you went.

- You must have found at least a gold mine.

- No, I merely remembered that my father was an Emperor of China and my mother a Queen of India.

- I beg your pardon? So I claimed my inheritance.

- Cathy will understand. It's an old 'joke' between us.

- I see. Are you staying long in the neighbourhood?

- I'm staying the rest of my life.

- Really?

- I've just bought the horses, the cattle, and the moors, belonging to the estate known as Wuthering Heights.

- No! You mean...? Cathy's brother Hindley sold out?

- Mmm. Heh! But he doesn't know it... yet.

[...]