FBI agent Nathan Donovan must enlist the help of ex-wife Macy Monroe, an expert in the psychology of terrorism, to help him stop the Plague Maker in time.
When an intern forensic pathologist seeks help from Dr. Nick Polchak, they uncover a sinister link between a lab director and a drug company specializing in genetic research.
A forensic entomologist stumbles into the mystery of a death years earlier -- and finds himself on the run with his client from someone who will do anything to keep a secret.