What if madness is simply the inability of the world to keep up?

Nineteen-year-old Sarah Fisher has never doubted her reality – only the ability of other people to perceive it. Brilliant, unstable, and after years of psychiatric care, she is newly accepted into a radically styled post-doc program at Cambridge when her life is shattered by a terrorist bombing that leaves her gravely injured and kills her mother. As one of the few who survive, Sarah insists she saw more than one attacker. The authorities insist she didn’t.

Haunted by grief and consumed by loss, she embarks on a quest to identify her mother’s killer. Guided by an elusive mathematical presence she calls the Quiet, she claims to have built a revolutionary AI inference engine she believes can predict the future. To her doctors, it’s delusional; a dangerous relapse driven by her own injuries and the loss of her mother. To Sarah, it’s proof of her competence.