Replaced Parts by Stephanie Hansen is a YA Sci-fi book by a unilaterally deaf author. The book includes sign language and is dedicated to the ICU staff who saved the author's life.
In the year 2163 a corrupt World Government controls everything on our planet and beyond.
Sixteen year-old Sierra has been so caught up in her own world of saving animal test subjects and her father's disappearance, she hasn't paid much attention. When she finally finds his location, she and her friend Yesha set off on a covert interplanetary mission to rescue him, she begins to see corruption first hand.
Discovering that her father has been on the front lines secretly trying to save human test subjects inspires her to join a revolution. But she is afraid of the collateral damage of hurting the people she loves. Will she find the strength to make a deal with the mad scientist Cromwell to save not just her friends and family but everyone?