That's the card Sierra had played...
Money Heist Season 3, Episode 8
BANK HEIST
JUDGE ORDERS SIERRA ARREST
Money Heist Season 4, Episode 8
Get me Inspector Sierra right now.
Money Heist Season 3, Episode 3
Sierra, please, what you're...
Money Heist Season 3, Episode 6
Inspector Sierra? What a joy!
I was looking forward to talking with you.
Money Heist Season 3, Episode 5