The next clue
must be HIDDEN
The Big Bang Theory Season 7, Episode 3
Hidden passageways built
so the Lords of Winterfell could escape.
Game of Thrones Season 2, Episode 10
...one of which is HIDDEN
by my pants.
The Big Bang Theory Season 12, Episode 2
I had been HIDDEN for 11 days
Money Heist Season 1, Episode 1
HIDDEN in this place.
Westworld Season 2, Episode 8