Renee looked at him from across her kitchen table—a folding metal slab with a single oil lamp. She smiled, revealing teeth stained by coffee brewed from beans she ground by hand.

Renee does not work for a tech giant or a spy agency. She is the archivist and sole custodian of the Securesilo Vault , a decommissioned Cold War missile silo buried two hundred feet beneath the wheat fields of North Dakota. But she does not store nuclear warheads. She stores secrets. Specifically, she stores the secrets of the dying.

The paradox of Renee is this: she is the most secure woman in the world, yet she is also the most vulnerable. One stray lightning strike, one undiagnosed aneurysm during her descent down those 270 rungs, and the silo becomes a tomb. All those secrets—the passwords, the apologies, the last photographs of dead children—would sit in the dark, perfectly preserved and perfectly inaccessible. Her security is absolute, but it is also a prison.