Based on Richard Preston's bestselling nonfiction book, this gripping limited series dramatizes the terrifying 1989 arrival of the Ebola virus on American soil. Starring Julianna Margulies as Army scientist Nancy Jaax, the series became Nat Geo's most-watched scripted series of all time. A second season — The Hot Zone: Anthrax — followed in 2021, chronicling the post-9/11 anthrax letter attacks, cementing the property as one of the network's defining prestige franchises.