Emma Parker is an ordinary medical student struggling to survive the pressures of medical school—until a mysterious collapse in anatomy lab changes her life forever. After waking from a disturbing vision that accurately predicts her professor's medical emergency, Emma discovers she possesses an impossible ability: she can see the future illnesses of anyone she touches. A healthy athlete may be destined for heart failure. A smiling professor may be months away from a fatal stroke. A stranger on the street may be carrying the first signs of a deadly cancer years before it appears. As Emma tries to use her gift to save lives, she faces a terrifying question: can the future be changed, or is she only witnessing the inevitable? Caught between medicine, mystery, and the burden of knowing what lies ahead, Emma must decide how far she is willing to go to alter people's destinies—even when every life she saves may come at a cost. Because some diagnoses are written years before the symptoms begin. And Emma is the only one who can see them.