I want Superman to know who's in possession of the kryptonite. He can't do anything about it, anyway.
5 seconds sound clip from Superman (1948) - A Job For Superman (Chapter 5).
You can hear this line at 00:11:21.481 in the Blu-ray version of the episode.
Quote context
[...]
- Superman'll be there tonight and so will I. To cover the story.
- Hello, chief. Did you hear the broadcast? You're going to provide protection. Good.
- Why not? They can't trace it. It was sent from our mobile unit.
- Do you think you oughta tip your hand?
- Professor Leeds is expecting me.
- Come in, Miss Lane. I think you'll be more comfortable in my study.
- Be careful with that glass. If you touch it, you'll set off an alarm.
- Hurry up. We haven't got much time.
[...]