
Tell the Underground Unit
to canvass the sewerage system
Money Heist Season 1, Episode 7

And the report from the Underground Unit.
Where is that report, hum?
Money Heist Season 1, Episode 8

bring in the UNDERGROUND teams
Money Heist Season 3, Episode 5

On the UNDERGROUND market,
my guy figures...
The Big Bang Theory Season 3, Episode 17

Take the ski mask off.
I feel like I'm talking to the
Weather Underground here.
Breaking Bad Season 2, Episode 8