This Silo finale revelation will likely leave audiences gasping for air.

TheSiloSeason 2 finale finally explained the secret behind the show’s longstanding Safeguard mystery.

This led thesci-fiheroine into another underground dwelling (known as Silo 17).

Silo Season 2 finale Safeguard Rebecca Ferguson

What Is the Safeguard in Silo?

Fans were finally treated to more information about the previously-teased Safeguard as a part of theSiloSeason 2 finale.

It is a failsafe protocol used across all of the Silos to keep its citizens at bay.

Steve Zahn as Solo and Rebecca Ferguson as Juliette looking shocked in Solo

Juliette heads into Season 3 with this Safeguard warning in hand.

SiloSeason 2 is now streaming onApple TV+.

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