Dust closes the Silo trilogy, and does so with more style than Shift but less than Wool. The action is back with Juliette from Wool, and her quest to connect Silos 18 and 17 and strike back against Silo 1. Simultaneously, we follow a small group of renegades in Silo 1, trying to forestall the suicide pact programmed into the Silo program by its designers.