After a devastating bombing at the CIA headquarters, former Marine Sergeant Nicholas Brody is framed as the mastermind and becomes a fugitive. CIA officer Carrie Mathison, who believes in Brody's innocence despite her bipolar disorder, is publicly disgraced and committed to a psychiatric hospital. Her mentor, Saul Berenson, the acting CIA Director, appears to betray her, revealing her condition and past affair with Brody to a Senate committee. However, this public breakdown is a calculated ruse: Carrie and Saul are secretly working together to draw out Iranian intelligence officer Majid Javadi.

Carrie is released and begins to work with Javadi's lawyer, seemingly against the CIA, as part of the elaborate plan. Meanwhile, Brody is found in a dire state in Caracas and is coerced by Saul into undertaking a dangerous mission in Iran. His task is to assassinate General Akbari, a high-ranking Iranian official, to facilitate Javadi's rise as a double agent for the CIA. Brody successfully carries out the assassination, bludgeoning and smothering General Akbari to death, and calls Carrie for extraction.

Despite his success, Brody's extraction is thwarted, and he is captured by Iranian forces. He is then publicly executed in Iran. Four months later, Carrie, now pregnant with Brody's child, is stationed in Istanbul and secretly adds a star for him on the CIA memorial wall.

Season 3 of Homeland covers episodes 1-12. Here's everything that happened:

Season 3, Episode 1: Tin Man is Down - Two months after the CIA bombing, Carrie is grilled by a Senate committee while Saul orders the assassination of six masterminds. Quinn hesitates but ultimately accidentally kills a child during his mission. Saul betrays Carrie by revealing her bipolar disorder and affair with Brody to the committee. The episode concludes with Carrie watching Saul's testimony, devastated.

Season 3, Episode 2: Uh... Oh... Ah... - Carrie is involuntarily committed after publicly declaring Brody's innocence. Saul recruits Fara to track Langley's attack financiers. Quinn threatens a banker to cooperate. Dana seeks solace with Leo. Heavily medicated, Carrie can only utter "Fuck you, Saul" as he visits her.

Season 3, Episode 3: Tower of David - Brody is held in a Caracas slum, recovering from gunshot wounds. Carrie is confined to a mental institution, trying to convince her therapist she's improving. Brody seeks refuge in a mosque, but El Nino's men kill everyone there except Brody. Back in his cell, Brody injects heroin. The episode concludes with Brody and Carrie in their respective prisons, succumbing to drugs.

Season 3, Episode 4: Game On - Carrie is released from the psychiatric hospital and, with no other options, seemingly agrees to work with Javadi's lawyer, Bennett, against the CIA. Dana runs away with Leo. However, the episode concludes with a twist: Carrie and Saul are secretly working together, having orchestrated the entire situation to draw out Iranian terrorists.

Season 3, Episode 5: The Yoga Play - Carrie jeopardizes her mission to help Jessica find Dana, executing a risky "Yoga Play" to evade surveillance. Saul learns he won't be CIA Director. Carrie is abducted by Javadi's men. Dana discovers Leo's dark secret about his brother's accidental death and returns home. The episode concludes with Javadi confronting Carrie.

Season 3, Episode 6: Still Positive - Carrie confronts Javadi, revealing the CIA's plan to capture him. Carrie discovers she is pregnant. Javadi, evading his planned meeting with Saul, murders his ex-wife Fariba and daughter-in-law Susan. Javadi is apprehended, and Saul punches him upon arrival at the safehouse. Dana changes her last name to Lazaro.

Season 3, Episode 7: Gerontion - Saul convinces Javadi to become a double agent in Iran, threatening to expose his embezzlement. Quinn confesses to murders he didn't commit to protect the CIA. Javadi reveals to Carrie that the real Langley bomber is still at large. Lockhart is locked in a conference room. The episode concludes with Carrie seeking Quinn's help to clear Brody's name.

Season 3, Episode 8: A Red Wheelbarrow - Carrie is shot by Quinn while attempting to prevent Franklin from killing the Langley bomber, who is subsequently murdered, eliminating the key witness to Brody's innocence. Meanwhile, Saul prepares for a clandestine trip, and Fara faces scrutiny from the Inspector General regarding her actions. The episode concludes with Saul finding Brody in a dire state in Caracas.

Season 3, Episode 9: One Last Thing - After a brutal heroin withdrawal, Brody is coerced by Saul into undertaking a dangerous mission in Iran. Carrie facilitates a brief, heartbreaking reunion between Brody and his estranged daughter, Dana, who rejects him, stating she never wants to see him again. Brody then departs for Iran, determined to survive for Dana and Carrie. The episode concludes with Brody beginning his mission, setting the stage for his potential redemption or demise.

Season 3, Episode 10: Good Night - Brody's mission to assassinate an Iranian official goes awry when his team is ambushed by Kurdish police. After the CIA team eliminates the officers, Brody flees in panic but is eventually captured by Iranian forces. Majid Javadi executes one of Brody's soldiers, and Brody is taken to Tehran, alone and in enemy territory.

Season 3, Episode 11: Big Man in Tehran - Brody, seeking to fulfill his mission, bludgeons and smothers General Akbari to death in his office. He then calls Carrie, revealing his actions and demanding extraction. Meanwhile, Saul and Lockhart discuss Brody's apparent defection and the potential compromise of Javadi as an asset, with Lockhart suggesting Brody must be eliminated. The episode concludes with Carrie facing the immense challenge of extracting Brody, now a wanted man in Iran, while the CIA grapples with the fallout.

Season 3, Episode 12: The Star - After killing Akbari, Brody escapes and reunites with Carrie, revealing she is pregnant. However, their planned extraction is thwarted by Dar Adal, leading to Brody's public execution in Iran. Four months later, Carrie, now station chief in Istanbul, secretly adds a star for Brody on the CIA memorial wall.