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Silo
In a ruined and toxic future, thousands live in a giant silo deep underground. After its sheriff breaks a cardinal rule and residents die mysteriously, engineer Juliette starts to uncover shocking secrets and the truth about the silo.
Why it matters
Apple closes its adaptation of Hugh Howey's trilogy with a fourth and final season, shot back to back with the third so the story reaches its end.
About Silo
Silo is Apple TV's science fiction drama, adapted from Hugh Howey's novels and set inside a buried bunker where thousands of people live under rules nobody is permitted to question. The story follows Juliette, an engineer from the lower levels who ends up as sheriff and starts working out what the people running the place have kept from everyone else. This fourth season is the last. Apple ordered it at the same time as the third and the two were produced back to back, so the adaptation reaches the end of Howey's story instead of stopping partway.
The final season premieres on July 9, 2027 on Apple TV, running ten episodes released weekly through September 10. Apple announced the date in September 2026, a few days after the third season finished airing. That makes this one of the rarer streaming shows that gets to land its ending on purpose, and it means anyone who has been holding off will have all four seasons complete and available from the fall of 2027 onward.
Where to watch
Availability for US, via JustWatch. Prices and catalogues change.
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