Dr. Nick Garrity and psych nurse Gillian Coates determine that one-by-one, each of those in the operating room for a fatally botched case is dying. Their discoveries pit them against genius Franz Koller--the highly-paid master of the "non-kill." As doctor and nurse move closer to finding the terrifying secret behind these killings, Koller has been given a new directive: his mission will not be complete until Gillian and Garrity, the last surgeon, are dead.