Silo (2023) — series, 4 seasons, 30 episodes

Name: Silo
Director: Graham Yost
Genre: Sci-Fi & Fantasy, Drama
Released: 2023-05-04
Cast: Rebecca Ferguson, Common, Chinaza Uche, Ashley Zukerman, Shane McRae

About the series

After devastating wars and a series of environmental disasters, Earth’s surface becomes uninhabitable. Around ten thousand survivors retreat into a massive underground silo, where generations grow up completely cut off from the world above. Their only glimpse of the outside comes through cameras that broadcast images across screens throughout the facility. Among the residents are Sheriff Holston and his wife, Allison. After receiving permission to have a child, Allison becomes increasingly fascinated by what lies beyond the silo. Her growing curiosity puts her at odds with the strict rules governing their isolated society and soon leads her into danger. When Allison suddenly becomes contaminated, Holston sets out to uncover what really happened to her. His search for answers forces him to question everything he has been told about the silo and its history. As he digs deeper, he uncovers secrets hidden by those in control and begins to suspect that Allison’s fate may be connected to a much larger conspiracy. Holston must now confront the system that controls the lives of thousands of survivors. To protect the people inside the silo, he has to discover who is telling the truth, why so much has been kept hidden, and what truly lies beyond the sealed doors of their underground world.

Seasons & episodes

4 seasons · 30 episodes

Season 1

2023 · 10 episodes

In a bleak dystopian future, humanity clings to survival deep underground within the confines of a colossal silo. Juliette, an engineer tasked with unraveling the mystery behind the death of a colleague, uncovers startling secrets that threaten the very fabric of their enclosed world.

E01
Freedom Day

04 May 2023 62 min

Sheriff Becker's plans for the future are thrown off course after his wife meets a hacker with information about the silo.
E02
Holston's Pick

04 May 2023 52 min

Juliette, an engineer, pieces together what might have led to a co-worker's mysterious death.
E03
Machines

11 May 2023 66 min

In her hunt for a new sheriff, Mayor Jahns clashes with Bernard. Juliette strikes a deal to keep the generator running.
E04
Truth

18 May 2023 49 min

Juliette tries gaining the trust of Deputy Marnes as they work to uncover the truth about recent tragedies.
E05
The Janitor's Boy

25 May 2023 54 min

Sims appoints Billings as chief deputy to keep tabs on Juliette, whose efforts to solve two murders lead to a showdown.
E06
The Relic

01 Jun 2023 55 min

During her investigation, Juliette uncovers disturbing secrets about someone she thought she knew.
E07
The Flamekeepers

08 Jun 2023 51 min

Bernard seeks Juliette's cooperation as he grows increasingly concerned about the silo's security. Juliette asks her father for a favor.
E08
Hanna

15 Jun 2023 48 min

New information causes Juliette to see her family's past differently—and she finally gains access to the silo's biggest secrets.
E09
The Getaway

22 Jun 2023 48 min

Racked with guilt, Billings sets off on a personal mission, only to discover a mind-blowing clue from Juliette.
E10
Outside

29 Jun 2023 49 min

Juliette's fate seems sealed when certain truths finally come to light.

Season 2

2024 · 10 episodes

Stranded outside her silo with a failing suit, Juliette Nichols races against time, stunned to find another silo nearby that could be her only hope for survival. Meanwhile, unrest brews inside her original silo as Bernard Holland rallies citizens to maintain order amid rising questions about their world. As Juliette faces unexpected dangers near the new silo, hidden truths about the silos’ origins and the world beyond begin to surface, deepening the mystery.

E01
The Engineer

14 Nov 2024 48 min

Juliette finds sanctuary in a silo long ago destroyed by war, thinking she's alone.
E02
Order

21 Nov 2024 42 min

In Silo 18, shock and unrest take hold in the wake of Juliette doing what no one's done before.
E03
Solo

26 Nov 2024 54 min

Bernard turns to Judge Meadows for help. Billings begins to wonder if he's being lied to. Juliette finally meets the man in the vault.
E04
The Harmonium

05 Dec 2024 54 min

Juliette sets out on a dangerous quest to retrieve a suit so she can return home and save her silo. Mechanical plans a meeting with Judge Meadows.
E05
Descent

12 Dec 2024 49 min

Sims finds himself with a new position. Juliette learns Solo isn't being honest. Bernard and Lukas make an important discovery.
E06
Barricades

19 Dec 2024 43 min

Bernard enacts a plan to root out Knox, Shirley, and Walker. Billings takes a stand. Solo saves Juliette's life and wants something in return.
E07
The Dive

26 Dec 2024 51 min

Lukas is assigned a mission. Mechanical sends a powerful message. Juliette embarks on a perilous descent—and confronts a new danger.
E08
The Book of Quinn

02 Jan 2025 47 min

Juliette discovers something's happened to Solo. Bernard makes an offer to Walker. Lukas meets with Salvador Quinn's descendants.
E09
The Safeguard

09 Jan 2025 59 min

Billings' faith is shaken. Lukas heads to the down deep. Knox identifies the traitor. Juliette uncovers the truth about Solo's past.
E10
Into the Fire

16 Jan 2025 59 min

The rebels make their move—and so does Juliette.

Season 3

2026 · 10 episodes

Season three reveals an origin story set centuries earlier, while continuing the saga of a dystopian society of 10,000 people living underground under mysterious circumstances. In the present, Juliette Nichols survives her forced "cleaning" but returns with memory loss as the silo recovers from rebellion and faces a dangerous new threat. Meanwhile, in the "Before Times," journalist Helen Drew and Congressman Daniel Keene uncover a conspiracy that pulls them into a chain of events with catastrophic, irreversible consequences.

E01
Who Are You?

02 Jul 2026 56 min

New mayor Juliette can't remember anything from her time outside—or her past.
E02
It's All Good

09 Jul 2026 51 min

Billings investigates a disappearance. Daniel Keene has a run-in with a reporter.
E03
A Dark Web

16 Jul 2026 49 min

Juliette takes control of her recovery process. Helen suffers consequences of her investigation.
E04
Whatever You Do, Don't Go Home

23 Jul 2026 48 min

The race to evade Camille leads Juliette to a shocking discovery. Daniel seeks help from a friend.
E05
Memory

30 Jul 2026 52 min

The events following Juliette's return come to light—and unexpected allies are made.
E06
The Drive

06 Aug 2026 55 min

Billings and Hank stumble on a new mystery. Daniel and Helen receive a surprising proposition.
E07
Radio

13 Aug 2026 55 min

Juliette sends Lukas and Kennedy on a mission, as a desperate Camille threatens Robert to tell the truth.
E08
Gray Goo

20 Aug 2026 56 min

Knox's father Gus comes clean about a secret. Charlotte makes a life-changing decision.
E09
Farewell

27 Aug 2026 62 min

The entire silo is stunned by an announcement from Camille. Daniel and Helen attend a special event.
E10
Troy

03 Sep 2026