After a message is broadcast implicating the Navy in a devastating disaster, Chandler looks to infiltrate the network and regain the trust of the American people.

The episode was rated 7.78 from 2793 votes.

After the horrifying revelations and reversals of fortune in Baltimore, Chandler and his fractured team join forces with an underground resistance in an attempt to defeat Amy Granderson. With doses of the cure running low, Rachel tries to do some good for the sick while remaining a prisoner at Avocet. Meanwhile, Slattery and the crew of Nathan James are in a race against time to save an injured Dr. Tophet and regain control of their ship.

The episode was rated 7.78 from 2902 votes.

The Nathan James must evade an overwhelming threat. A revelation in St. Louis puts President Michener in a terrible position.

The episode was rated 7.80 from 3645 votes.

Chandler confronts his enemy — and his personal demons — in a final showdown, with the fate of humanity on the line.

The episode was rated 7.80 from 2581 votes.

Chandler finds himself making a difficult decision when an order comes in from the White House.

The episode was rated 7.83 from 3544 votes.

Chandler must devise a plan to avoid losing everything, while a devastating hostage situation occurs back home.

The episode was rated 7.83 from 1303 votes.

Chandler gets a lead that could help answer threatening questions. Kara does some digging in the White House.

The episode was rated 7.89 from 3501 votes.

Chandler returns to America to find out what has really been happening.

The episode was rated 7.95 from 3517 votes.

Season Finale- With their mission now fully dedicated to spreading the cure, Nathan James puts a call out to civilians to meet at pre-selected ports across the country, where all will receive the cure. However, small Immune factions remain active in their quest to fight the cure and fulfill Ramsey's dreams.

The episode was rated 7.95 from 3016 votes.

Rachel and Chandler ask for six volunteers to participate in human trials of her vaccine, but the tests could be a living hell as the virus and the vaccine do battle inside their bodies. Meanwhile back in the States, Chandler’s wife and father are doing everything they can to keep their family alive.

The episode was rated 7.95 from 2977 votes.

Chandler faces his powerful enemy in a final showdown. Kara joins someone that can help with her mission.

The episode was rated 7.96 from 3543 votes.

With Chandler and Tex caught in a dangerous situation, Slattery has to step into the role as commanding officer. Torn between a mission with the fate of the world at stake and a Captain (and friend) in danger, Slattery has to find a way to get his people back without losing the most important asset: the vaccine prototype.

The episode was rated 7.96 from 3020 votes.

The fight for America comes to an end; Chandler faces a challenge that could change his life forever.

The episode was rated 8.06 from 3615 votes.

Chandler and his crew finally returns home, where a former D.C. power player is fending off a dangerous warlord who threatens her hopes of restoring law and order in society. Now with a location and a means to finalize their mission, Chandler sets out to save his dying family, only to discover something absolutely terrifying about this brave new world.

The episode was rated 8.08 from 3088 votes.

After retrieving the mastermind behind the Immune communications network, Nathan James finds itself trapped between the sub and civilian blockades set up by the Immunes. Chandler sends Dr. Scott and the cure off the ship under the protection of XO Slattery as the James heads towards its inevitable final showdown with the sub.

The episode was rated 8.10 from 2929 votes.