Silo
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50 free Silo trivia questions with answers — entertainment quiz, new questions added Aug 2026.
Silo is the Apple TV+ drama about ten thousand people living in a 144-level bunker who have been told for generations that the outside air will kill them. It grew out of Wool, a short story Hugh Howey self-published on Kindle in 2011 and turned down seven-figure offers to keep, and it spent a decade as a stalled Ridley Scott film before Graham Yost rebuilt it as a series with Rebecca Ferguson as the mechanic-turned-sheriff Juliette Nichols. These 50 questions cover the show and the books behind it: Holston and Allison's cleaning, the Pact, Judicial and the raiders, Bernard's IT department, Walker's workshop in the down deep, Silo 17 and the survivor called Solo, the season-three flashbacks to Congressman Keene and Senator Thurman, and the nanobot truth behind the argon. There are production questions too: the Hertfordshire studio where the staircase was built, the production designer credited with the silo, the composer, the Canneseries premiere, and the renewal that set a fourth and final season. Easy questions stick to the main cast; the hard tier asks about Silo 40, Operation Fifty and the print deal Howey signed with Simon & Schuster. Every answer is cited to a page we checked and comes with a one-line explanation. Play it solo or print it for a sci-fi night alongside our Apple TV+ and dystopia quizzes.
30 of 50 questions with answers and explanations. Play the quiz
Q 01On which streaming service did Silo premiere in May 2023?
Apple TV+
Apple TV+ renewed Silo for a second season in June 2023, before the first season had even finished airing.
Q 02Who plays engineer Juliette Nichols?
Rebecca Ferguson
Rebecca Ferguson also executive produces Silo, and her Juliette survives exile outside only to come home in season three with her memory gone.
Q 03Silo's underground city has 144 levels; what do residents call the lowest ones?
The Down Deep
The Down Deep houses the generator that powers the silo, and Juliette fled there as a teenager to become an engineer.
Q 04In Silo, residents who say they want to go outside are sent out to do what?
Clean the sensors
Clean the sensors: exiles nearly always do before dying in the camera's view, which convinces residents the outside is deadly.
Q 05Which author self-published the novels that the TV series Silo is based on?
Hugh Howey
Hugh Howey had worked in a bookstore before self-publishing, and he turned down seven-figure offers to keep his e-book rights, taking a print-only deal instead.
Q 06What are the three novels in the Silo trilogy?
Wool, Shift and Dust
Wool, Shift and Dust grew out of Wool, a short story its author meant to stand alone until it became an online sensation.
Q 07Which creator of the crime drama Justified also created the TV series Silo?
Graham Yost
Graham Yost took over from writer LaToya Morgan, whose version had been developed at another network, and he also serves as showrunner.
Q 08Who plays Allison Becker in season one?
Rashida Jones
Rashida Jones's Allison publicly declares she wants to go outside, a wish the silo is bound to grant.
Q 09Who plays Sheriff Holston Becker?
David Oyelowo
David Oyelowo's Holston, still grieving his exiled wife, asks to be sent outside himself.
Q 10Which rapper-actor plays Robert Sims, head of security for Judicial?
Common
Common's Sims backs Bernard's false claim that Juliette asked to go outside, and she is arrested.
Q 11In Silo, what is the procedure by which Silo 1 can pump poison into a silo to kill everyone?
The safeguard
The safeguard failed in Silo 17, because its poison pipe had been welded shut during the uprising.
Q 12What is Bernard Holland's job in Silo?
Head of IT
Head of IT: Bernard guards a vault of secret records and turns out to be the silo's real ruler.
Q 13Martha Walker, Juliette's mentor, suffers from what condition?
Agoraphobia
Agoraphobia keeps Martha shut in her workshop, yet she secretly got Juliette a better-sealed suit, which let Juliette survive outside.
Q 21In Silo, what is the Pact?
The silo's list of rules
The silo's list of rules hides a secret too: one old copy was used to encode a letter from a leader of the rebellion era.
Q 22Who plays Mayor Ruth Jahns?
Geraldine James
Geraldine James's Jahns is 40 years into a beloved tenure when she is poisoned.
Q 23In Silo, what are the armed enforcers who work for Robert Sims called?
Raiders
Raiders are sent to seize Juliette once she discovers the surveillance cameras hidden behind the silo's mirrors.
Q 14In Silo, what did maintenance worker Patrick Kennedy once smuggle?
Relics
Relics are forbidden pre-silo objects, and a relic hard drive holding George's secret files powers season one's mystery.
Q 15Deputy Paul Billings is afflicted with which condition?
The Syndrome
The Syndrome causes tremors, and Billings hides it because sufferers are barred from jobs like deputy.
Q 16Who plays Lukas Kyle, the systems analyst curious about the world outside?
Avi Nash
Avi Nash's Lukas charts 'lights' on the silo's night view without knowing they are stars, and meets Juliette in the cafeteria.
Q 17Who plays Juliette's estranged father, Dr. Pete Nichols?
Iain Glen
Iain Glen's Pete lost his daughter when she blamed him for informing on her mother, until Judicial's own files showed cameras had caught her.
Q 18Who plays Deputy Sam Marnes in season one?
Will Patton
Will Patton's Marnes believes the poison that killed Mayor Jahns was meant for him, because they drank from each other's flasks.
Q 19Who plays George Wilkins, the computer geek with a repair shop?
Ferdinand Kingsley
Ferdinand Kingsley's George recovers files from an old hard drive and dies in a fall Juliette calls murder, though footage later shows he jumped.
Q 20Which actress plays Judge Mary Meadows?
Tanya Moodie
Tanya Moodie's Meadows ends up poisoned by Bernard in season two.
Q 24Which actor joined Silo's cast for season two, announced at Comic-Con 2024?
Steve Zahn
Steve Zahn walked on as a surprise at the Comic-Con fan panel, and his character grew up alone in a locked vault after a rebellion.
Q 25In Silo's second season, what does Juliette search a flooded silo for so she can return home?
A firefighter suit
A firefighter suit was Solo's idea, and Juliette wears one to walk home to Silo 18 in the season finale.
Q 26In Silo, what do residents call the lost era whose records were destroyed 140 years ago?
The Before Times
The Before Times were erased on purpose: season two reveals the silo's own leaders destroyed the records and drugged the water so people would forget.
Q 27In Silo's season two finale, what does Juliette's father Pete Nichols sacrifice himself to blow up?
The stairs
The stairs: blowing them up trapped Bernard's forces in the levels below, cut off from the rebels above.
Q 28Ashley Zukerman plays which season-three character?
Congressman Daniel Keene
Congressman Daniel Keene pushes to join a Senate committee because his sister is a pilot on the military mission it oversees.
Q 29Jessica Henwick plays Helen Drew, who has what job?
Journalist
Journalist Helen Drew is fired for chasing the story of a failed military mission, which leads her to the people building the silos.
Q 30Laura Innes plays Senator Rosalind Thurman, overseeing conflict with which country?
Iran
Iran is blamed for a dirty bomb on Washington, and Thurman later steers a pilot hurt on the retaliatory mission into a clinic that erases her memory.