Yeah. We couldn't figure out where it was coming from. I tried, but...

And it only happened when we got to the lower levels.

[ It's clearly bothering her. It had to have been important, right? ...But they hadn't been able to solve the mystery, and so they'd all turned around and gone out. ]

It was...I guess it was a bust, overall, but at least no one was hurt. ...And I think everyone there came away with something...extra.