Replica by Lauren Oliver

Two teenage girls’ lives are told in alternating sections: one appears to be an ordinary girl living a familiar life, while the other wakes up in a clinical facility with only a set of implanted memories. As their stories converge, they uncover a secret program that harvests and reconstructs people’s lives to create copies, forcing them to confront who they are, whether memory or choice defines a person, and the moral cost of the experiment that linked them.

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