Outstanding examination of identity, science and ethics. “I used to be someone. / Someone named Jenna Fox. / That’s what they tell me,” begins the hypnotic first-person narration. She woke from an 18-month coma two weeks ago, but she doesn’t know how to smile or who her parents are. She watches recordings of each childhood year but they ring no bells. Why has her family brought her to a hidden cottage in California, distant from home and doctors? Mental flashes reveal a void of paralysis where “darkness and silence go on forever.” Was that her coma? Voices call Jenna, hurry! into her ears—are those from the night of the accident, which she can’t remember? Jenna recognizes that her gait is awkward and her memory peculiar (spotty about childhood while disturbingly perfect about academics), but asking questions provokes only furtive glances between her parents. Pearson reveals the truth layer by layer, maintaining taut suspense and psychological realism as she probes philosophical notions of personhood. A deeply humane and gripping descendent of Peter Dickinson’s classic Eva. (Science fiction. YA)