Enders by Lissa Price

In a dystopian future where the elderly can rent the bodies of the young, a teenage girl named Callie struggles to reclaim her identity after discovering that her body has been rented out for a sinister purpose. As she navigates a world filled with deception and danger, Callie uncovers a conspiracy that threatens not only her life but also the lives of those she loves. With the help of unexpected allies, she must confront powerful adversaries to protect her future and expose the truth behind the body-renting corporation. The story explores themes of identity, trust, and the moral implications of technology.