An AI that never lies. A system that never fails. A girl who refuses to believe it. Quinta Voss has always trusted the AI. On Mars, Valence decides who eats, who works, who lives. For four generations, no one has questioned it – especially not the Voss family, descendants of the colony founder. But when Quinta's father dies in a cascading system failure Valence calls unavoidable—and Quinta discovers he'd been stealing medical supplies in a colony where theft is the ultimate betrayal—her faith begins to crack. Fleeing her father's secrets, Quinta volunteers for a death digging in soil contaminated with Glass, the bacterial plague that's turned Mars into a graveyard – twice. The life support is failing. Someone has to dig. Her crew includes outcasts who refuse Valence's system—and the boy being punished for her father's death. Quarantined on a mission where one mistake means death, Quinta starts seeing what she was taught to ignore. Rulings that favor the obedient. Rebels blamed for poverty the system ensures. Her father's crimes that might have been rebellion. Everyone believes the system works. Quinta is starting to think that's the problem—and in a colony where her family name has always meant protection, the most dangerous thing Quinta can do is see the truth. For fans of the class warfare in Red Rising, the systemic horror of The Handmaid's Tale, and the claustrophobic setting of Wool.