In a daring attempt to locate the Spider Lady's hideout, Jimmy Olsen conceals himself in a packing case, supposedly containing a valuable mineral, which is to be taken there in a truck driven by two members of the organization.
13 seconds sound clip from Superman (1948) - Blast In The Depths (Chapter 12).
You can hear this line at 00:00:54.638 in the Blu-ray version of the episode.
Quote context
[...]
- That crate is gonna be his coffin.
- Take it easy. Maybe he's got a gun.
- What dire peril does Lois face now?
- Will the Spider Lady stop at nothing to accomplish her purpose?
- You can't afford to miss Blast in the Depths, chapter 12 of Superman, at this theater next week.
- There was a man in the box, but not now.
- Where were you heading for? Talk fast. Speak up. Sometimes I don't know my own strength.
- We wasn't going anyplace. A car was gonna meet us up the road and tell us where.
- You working for the Spider Lady?
- I don't know. We never saw her.
- A guy named Anton hired us to do this job.
[...]