Silo Saga: Invisible (Kindle Worlds Novella) (Silo 25)

Trained guards hibernate in a secret installation next to Silo 25, their mission to protect and reintroduce a library of useful life-forms to establish economic dominance when the surface becomes habitable again. Simone wakes early, in the dark, alone. The installation is falling apart, and cheap materials and shoddy construction are only partly to blame -- she discovers sabotage that places the mission, and everyone inside the installation, at grave risk. But before she can salvage the mission, she needs to find the saboteur...