The police are not sure whether it's murder or suicide.
2 seconds sound clip from Superman (1948) - Blast In The Depths (Chapter 12).
You can hear this line at 00:06:44.003 in the Blu-ray version of the episode.
Quote context
[...]
- I don't do business that way.
- You'll do business. I want that stuff, and I'm gonna get it.
- We better get out of here. Somebody must have heard that shot.
- Yeah, but we're coming back. We still gotta get that mono chromite.
- A mining engineer named Collier in the Armstrong Building has been shot.
- The police are not sure whether it's murder or suicide.
- It might be an angle on the mono chromite. Get on it.
- Lois hasn't phoned in. I'm holding page three for her story.
- Get down to Collier's office and see what's cooking.
[...]