Simcoe tries to hunt out the rebel conspirators in Setauket. Ben is sent away on a secret mission.

Mary struggles when she realizes that Abe is a spy working for the other side. Ben and Caleb hope to save Patriot families when they carry out a raid on…

The uninfected are hiding in a secret bunker on the base as the CDC attempt to retrieve the canisters with the virus and the cure while the Ilaria assassins capture…

Kyle rescues Dr. Sarah Jordan as Alan Farragut fights his own brother, Peter Farragut.

15 months after the events at Arctic Biosystems, new CDC team with the addition of biotoxicologist Kyle Sommer respond to a potential outbreak on a Windjammer in the Northern Pacific….

The CDC team continue to investigate the island; at the same time, they discover Peter’s brother, Alan, is a member of Brother Michael’s cult, and his warnings for them to…

Peter and Jordan leave the safety of the Abbey to retrieve some specimens and discover just what’s living in the woods, meanwhile Sister Amy plots to make them leave forever.

As Michael struggles to keep the abbey under control, the CDC team moves closer toward tracking the source of the pathogen. Alan fights the urge to rejoin his team and…

Michael locks Peter and Alan in a pit. Alan escapes and discovers that Kyle has a secret of his own. Agnes reveals a shocking truth to Michael, who drastically turns…

Amy creates an outbreak of the disease. Michael torments Peter in the pit. Alan, Jordan and Kyle discover the truth about the Abbey’s food chain. An uprising at the Abbey…

As Peter gains a new cellmate, Michael takes extreme action when his followers begin to mutiny.

The Coast Guard arrives on the island to take the CDC team to another island to deal with another outbreak of the pathogen. Meanwhile, Sister Amy has to contend with…

Alan, Kyle and Winger search the woods for the tree with red sap that might be a cure for the pathogen.

The Abbey becomes a house of horrors as Kyle struggles with his infection and Anne begins to shape a successor to Michael.

The Navy prepare to implement Plan B, a final solution to ensure that the virus and everyone infected with it never make it off the island.

A Center for Disease Control medical team’s investigation of a disease outbreak at a high tech arctic research lab uncovers the truth about a secretive research project that could threaten…

As Dr. Alan Farragut accelerates the hunt for his infected brother Peter, the quarantine of three scientists threatens to create panic at the lab. Doreen finds evidence that Dr. Hatake…

As Alan sets up an isolation unit to quarantine the infected lab workers, Walker and Jordan each face the possibility that they have the deadly virus, too.

As Alan risks killing Peter in a desperate effort to cure him, Walker teams with a mysterious young researcher to survive their quarantine. Jordan discovers her Rapid Response test is…

As Alan’s controversial cure leaves Peter clinging to life, the unchecked virus forces Jordan to make a devastating decision. Walker discovers the surprising truth about her new ally, while Daniel…

After Daniel leaves Balleseros to die, the mystery surrounding his connection to Hatake is revealed. As he works to save Peter, Alan struggles with his feelings for both Walker and…

As Ilaria CEO Constance Sutton arrives to collect the virus and its cure, Alan finds Walker seemingly symptom-free. Daniel learns the truth about his “adoption” by Hatake.

Alan risks his life to save his brother Peter from Ilaria CEO Constance Sutton, only to see him re-captured by Vectors. Julia Walker deals with the mystery of her “cure”…

The CDC teams learns the real purpose of the infection and Alan and Julie make a perilous journey to retrieve the canister that has the original source virus.

In a last ditch effort to find help and a cure, Alan and Julia go to an abandoned satellite station discover a shocking secret that reveals Hatake’s ultimate goal and…

The Vectors start working together to hunt down the uninfected as the CDC develops a risky cure and a band of assassins from Ilaria secretly infiltrate the base.

The uninfected are hiding in a secret bunker on the base as the CDC attempt to retrieve the canisters with the virus and the cure while the Ilaria assassins capture…

Alan and Peter capture the assassin Scythe and demand to know the whereabouts of Julia’s mother. Balleseros confronts Hatake about the missing Inuit children, while Anana and her brother learn…

Benedict Arnold rounds up spies in New York. Abe plots to destroy essential British supplies, but he will need his father’s help.

When one of the Culper Ring members is captured, Arnold seeks to interrogate him – with the help of a ruthless Colonel Simcoe.

Abe’s scheme to rescue Caleb turns deadly. Anna faces a difficult decision. Arnold suspects Peggy is keeping a secret from him.

Amidst a growing rebellion in camp, the Culper Ring must chart a new course. Arnold finds an unlikely ally. Rivington teaches Townsend a lesson.

Seeking revenge against Simcoe, Abe travels to New York and meets Benedict Arnold. A visitor from Anna’s past comes to the continental camp.

The plot to kidnap Benedict Arnold is hatched; Peggy learns Cicero’s secret; Washington and the French clash over strategy.

Ben’s plan to kidnap Benedict Arnold conflicts with Abe’s plan to kill Simcoe; changing loyalties turn enemies into allies.

Abe and Simcoe settle their score; Ben appeals to Gen. Washington; Townsend risks everything while Caleb seeks redemption.

Washington heads south to lay siege on Yorktown; Abe volunteers for the Continental Army; Peggy goes into labor.

The fate of the Culper Ring is revealed; the American War of Independence comes to an end; a settling of accounts between shadows and spies; America struggles to begin.

In the third-season premiere, Abe covers up a murder with an unlikely accomplice. Elsewhere, Benedict Arnold abuses his power as he settles into a new home in Philadelphia.

Anna tries to save the ring after Abe’s cover is blown. Benedict Arnold seeks Washington’s help against charges of treason. Townsend sends a signal.