The Zero Variable: In a World Ruled by Numbers, the Greatest Threat is a Man Who Cannot Be Counted.
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Everything has a price. Everyone has a number. And the Hollow Compact never forgives a debt.
In the towering, hyper-structured city of Varek's Mouth, human worth is dictated by the Ledger-an omnipotent metaphysical system that tracks every soul. For Sybil Snow, a mid-tier enforcer for the ruthless Ironveil Guild, the numbers are her shield. Haunted by a devastating betrayal in her past, she has transformed herself into the perfect, unfeeling weapon of the Towers, crushing default debtors wit...




















