
Computer:
Encryption KEY deactivated.
Westworld Season 2, Episode 10

There's a KEY down
here at the bottom.
The Big Bang Theory Season 5, Episode 14

handed over the KEY,
and that was it.
Breaking Bad Season 5, Episode 13

And if he marries her,
he'll have the KEY in his pocket
Game of Thrones Season 3, Episode 4

So did she tell you
where the KEY is?
Westworld Season 3, Episode 8