10,000 Bones

In this hard science fiction novel, a Collections Agent on a planet where calcium is currency uncovers a murderous plot.
On the planet Brink, the scarcity of calcium led the world's government to declare it the official currency. In the decades since, the governments of other colonized worlds have suppressed shipments of calcium in order to maintain favorable exchange rates, while Brink's Commerce Board has struggled to negotiate importation quotas to keep the population alive and growing.
Taryn Dare is a Collections Agent, a specialized detective tasked with finding black market calcium and recovering it so that the Commerce Board can recycle it and distribute it as currency. Taryn is fueled by one goal: to save up enough cash for a one-way ticket to a better world. But when a job recovering a human corpse uncovers a deadly conspiracy in the system, Taryn is drawn into an investigation that may threaten her life, and the very fabric of her society.

"The reader will root for Taryn as she gradually learns the full impact of her actions and desperately tries to make changes in this uniquely realized world."―Booklist, starred review
"Hollywood script reader Ollinger turns to writing with a gut-punching debut...[A] bleak but energized story that will satisfy fans of darker SF."―Publishers Weekly