All is not well at Detroit's St. Vincent's Hospital. The beds are used for more than convalescence. A nasty case of malpractice surfaces. An operating room is spectacularly blown up. Worst of all, Sister Eileen, the iron-willed nun who almost single-handedly keeps the inner-city hospital open, becomes the object of some violently unhealthy attention. Can Father Koesler make the correct diagnosis before the killer writes another murderous prescription?