Coma' is a novel written by the American author Robin Cook. Published in 1977%2C it was Cook's first published novel and became an instant bestseller. The story centers around Susan Wheeler%2C a medical student who discovers that her hospital is involved in a conspiracy involving the illegal harvesting of organs from comatose patients. The novel explores the ethical dilemmas surrounding the practice of organ transplantation and the role of corporate interests in the medical field.