In Boston's largest hospital, two patients undergoing routine surgery fall victim to a baffling mishap.

They never regain consciousness.

Fighting against the scorn of her colleagues and the medical establishment, one brave woman starts to investigate the coma cases: steadily uncovering something unbelievably hideous . . .

Coma. The fear will never leave you.

'Master of the medical thriller' New York Times

It began with two patients undergoing routine "minor surgery" in Boston's greatest hospital but Nancy Greenly, Sean Berman and a dozen others-all admitted to Boston Memorial Hospital for routine procedures-were victims of the same inexplicable, hideous tragedy on the operating table.

They never regained consciousness.

Up against the scorn of the medics and the hostility of the establishment, one girl medical student starts to probe the coma cases, steadily uncovering something unbelievably hideous...