
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.
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New mayor Juliette can't remember anything from her time outside—or her past.

Billings investigates a disappearance. Daniel Keene has a run-in with a reporter.

Juliette takes control of her recovery process. Helen suffers consequences of her investigation.

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

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

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

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

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