Dr. Cristina Silva, clinical psychiatrist, has reason to worry when patients in her study group start killing herself: she’s taking the same drug. Afraid of losing recovered memories she’d lost in an accident that claimed her parents’ lives, she searches for proof the drug is safe. Dogged by hallucinations, nightmares, delusions, and a commanding voice in her head, Cristina struggles to keep her wits while she battles real and perceived threats against her career and her life. As her mental state deteriorates, she must face the possibility she is going insane, everyone she trusts is against her, or both. Her search for her true identity has her dodging the drug company’s terrorist stockholders, friends who may be enemies, and the adverse effects of a drug that could destroy her.