All ten episodes from the fourth season of the post-apocalyptic drama adapted from the novel by William Brinkley. The show follows the crew of the USS Nathan James, captained by Tom Chandler (Eric Dane), on a mission to find the cure for a deadly virus which has rapidly spread across the world and decimated its population. In this season, the crew of the Nathan James try to stop the red rust virus from spreading by finding seeds immune to its powers of destruction, which threaten the planet's food supply. Meanwhile, they find themselves up against a new adversary who has an evil plan in store for humanity - Dr Paul Vellek (Peter Weller). The episodes are: 'In Medias Res', 'The Pillars of Hercules', 'Bread and Circuses', 'Nostos', 'Allegiance', 'Tempest', 'Feast', 'Lazaretto', 'Detect, Deceive, Destroy' and 'Endgame'.