No, I've got to track this down... find an explanation for it.

4 seconds sound clip from the The Adventures of Superman - The Mystery of The Walking Dead classic radio series.

You can hear this line at 00:18:47 in the radio play.

Quote context

[...]

- I'm sorry he's not on duty now so he could tell it to you himself.

- Oh, now don't misunderstand me. I'm not questioning it for a moment. It's just that...

- Well, there doesn't seem to be any other explanation. Unless you believe in the supernatural.

- If I were you, I'd forget about it.

- It's too late for that.

- Miss Lane is in a state of collapse, and frankly, I'm getting worried.

- No, I've got to track this down... find an explanation for it.

- Well, I'll stop off at the Midtown Mortuary before I go back to Miss Lane's apartment.

- They'll tell you he was dead.

- Well, if they do, fine. Then if the dead can come to life, I want to know about that, too!

- You're not holding anything back, are you, Clark?

- Now, why should I hold anything back?

- I told you what the warden said and I told you what I learned at the mortuary.

[...]