Silo

In Silo 18, thousands of people live in a 144-level shelter underground. No one knows why, and asking is dangerous. Anyone who asks to leave is sent out to clean the cameras and dies outside. Sheriff Holston follows his wife, Allison, out and names Juliette Nichols, an engineer from Mechanical, as his replacement. She takes the job to look into the death of George, her boyfriend. Mayor Jahns and Deputy Marnes are killed. With help from Lukas Kyle, Juliette finds George's hard drive and learns that Bernard Holland, head of IT, is the one running the Silo. Sent out to clean, she doesn't: she walks over the hill and sees other silos on the horizon.

1. Behind the scenesThree levels of stairs

   The whole Silo comes from one set, three levels of staircase built at Hoddesdon Studios in England. Gavin Bocquet's team redresses it to play every part of the shelter.

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2. Behind the scenesIt was going to be a movie

   In 2012, Fox bought the rights to Wool, with Ridley Scott and Steve Zaillian producing. The project stalled after Disney bought Fox, moved to AMC in 2018 and landed at Apple in 2021.

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3. ReferenceIt started as a short story

   Hugh Howey self-published Wool on Kindle in 2011 as a short story. Its success turned it into a novel, and Howey is now one of the show's executive producers.

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