- How do you know this?
- I was there. I saw it happen to him.
3 seconds sound clip from Superman (1948) - Man Of Steel (Chapter 4).
You can hear this line at 00:14:49.589 in the Blu-ray version of the episode.
Quote context
[...]
- You may remove the blindfold.
- It won't do you any good to try to see me. Let me introduce myself. I'm the Spider Lady.
- You wanted to meet me, didn't you?
- Now, give me your information.
- Well, I know how to make Superman helpless.
- I was there. I saw it happen to him.
- If this is true, we can steal the reducer ray without any interference from Superman.
- With that weapon, I'll be the most powerful person in the world. Pay him.
- A dollar. What sort of a joke is this? A dollar.
- It's only a token. Those who work with me will share in fabulous wealth at the proper time.
- Why, what I've given you is worth thousands, millions. You'll pay my price or... Or...
- Or what?
[...]