After missing and presumed dead for eight years, Marine Sergeant Nicholas Brody is rescued in Iraq, and returns home to his family. But CIA agent Carrie Mathison suspects he might have been turned by his terrorist captors, and believes he could be part of a plan to attack America.

Carrie receives new evidence from an undercover agent and stays glued to the surveillance footage of Brody's home, which reveals a man struggling with his traumatic memories.

Brody prepares to enter the spotlight; Carrie closes in on an al-Qaeda plot.

The political powers that be make big plans for national hero Brody, but his increasingly erratic behavior threatens his media darling status; Carrie grows desperate for evidence linking Brody with Abu Nazir, as Saul directs her to focus on Nazir's money trail.

The relationship between Carrie and Brody becomes more complicated when they head into the countryside for the weekend, while Mike and Jessica face the fallout of the truth about their relationship, and Saul catches Aileen on the run to Mexico.

As Carrie and Saul reel from the news that Walker is alive, the intelligence community clashes on the best way to capture him; Brody learns a shocking truth about his captivity.

After his attempt to sever ties with Abu Nazir, Brody finds himself reliving his captivity and recommits to his mission; Carrie finds herself in the middle of a public relations nightmare on the heels of the mosque shooting.

Brody has been elected to Congress. A woman named Roya comes to see him, and asks him to steal a list of homeland targets from Estes's office safe. Carrie is working with the CIA again because Fatima, an informant married to a man working for Abu Nazir, tells Saul that she'll only speak to Carrie. Estes goes to pick up Carrie at her sister's house, and then she's sent to Cyprus, where she's prepped for a brief mission in Lebanon.

Carrie is forced to intervene when Fara fails to recruit a key asset. Still reeling over events in Islamabad, Quinn zeroes in on a potential lead.

Carrie gets a tip from Redmond regarding Quinn's lead. Saul calls in a favor from an old friend in the Pakistani military. Fara uncovers a conspiracy.

Carrie tries to earn the trust of a frightened asset. Saul catches a break when he spots a familiar face. Quinn and Fara stake out a new suspect.

Carrie and Reda fight for their client while Quinn fights against his new life. Saul and Dar suspect Keane has a secret.

Sekou buckles under peer pressure to prove he's not an FBI informant. Saul secretly seeks a second opinion. Quinn tails Carrie's suspicious neighbor.

Keane breaks the rules to reclaim her power. Saul investigates Mossad agent Tova's movements. Quinn's photos lead FBI agent Conlin to a weird place.

A smear campaign against Keane's late son is launched. Quinn grows distrustful of Astrid. In a meeting with Keane, Javadi makes a shocking statement.

Quinn learns the assassin he's tracking is linked to a place from his past. Max spots a familiar face at his new job and takes a risk to get evidence.

Dar uses strong-arm tactics to find out who's behind the Toxic Soldier blog. A phone tip sends Carrie and Quinn scrambling to save Keane's life.

A still-recovering Carrie is sent to Kabul to help secure a peace deal with the Taliban. Elsewhere in Afghanistan, Max embarks on his own risky mission.

After Saul warns Haqqani that there's a mole in his camp, the Taliban leader summons his son. Carrie receives a mysterious invitation from Yevgeny.