You heard him call her name. It was Cathy.
6 seconds sound clip from the Wuthering Heights (1939)) classic radio play.
You can hear this line at 00:06:57 in the radio play.
Quote context
[...]
- Then she's come. She's come again at last!
- Cathy, wait for me! Wait for me!
- He's not going out there in that storm? This is insane. Come back!
- Am I mad? Why did he go out there? What was that voice?
- You heard him call her name. It was Cathy.
[...]