U.S. Marshal Raylan Givens returns to his native Harlan, Kentucky, for what he hopes is his final assignment: to finally bring down career criminal Boyd Crowder. Boyd, Raylan's lifelong adversary, is planning a massive heist to secure his future with his fiancée, Ava Crowder. Ava, caught between the two men, is coerced by Raylan into becoming an informant against Boyd, hoping to escape her own legal troubles.

The central conflict revolves around Boyd's elaborate scheme to rob Avery Markham, a ruthless businessman buying up land in Harlan. Boyd's plans are fraught with danger and betrayal. Early on, Boyd shoots Dewey in the head, demonstrating his brutal resolve. Ava struggles to maintain her cover as Boyd grows increasingly suspicious, while also navigating the dangerous world of Markham and his associates. As the heist unfolds, Ava's loyalty is pushed to the breaking point, leading to a shocking twist where Ava shoots Boyd and flees with Markham's money. The season culminates in a final confrontation where Avery Markham is killed by Boyd.

Ultimately, Raylan arrests Boyd, but their long-standing rivalry ends not in a shootout, but with Raylan allowing Boyd to draw, which Boyd refuses. Years later, Raylan visits Boyd in prison, lying about Ava's fate. Raylan eventually finds Ava, who has built a new life and is raising a son.

Season 6 of Justified covers episodes 1-13. Here's everything that happened:

Season 6, Episode 1: Fate's Right Hand - Raylan returns to Harlan to build a case against Boyd, using Ava as an informant. Boyd, now working with Duffy and Hale, plans a bank heist. Raylan attempts to coerce Dewey Crowe into turning informant, but Boyd unexpectedly shoots Dewey in the head. The episode concludes with Boyd watching a sleeping Ava, uncertain of her loyalty.

Season 6, Episode 2: Cash Game - Raylan investigates the bank robbery, encountering Choo-Choo. Boyd tries to profit from the stolen ledger, but Raylan intercepts him. Ava cleverly manipulates Boyd, maintaining her cover. Tim's interrogation at the Pizza Portal yields intel. The episode ends with Raylan confronting Walker, setting up a meeting with his boss, Avery Markham, and revealing the Pizza Portal's past as a bank.

Season 6, Episode 3: Noblesse Oblige - Raylan and Rachel investigate Boyd's explosives source, leading them to Luther, an old friend who takes the fall for his son. Boyd is kidnapped and confronted by Avery Markham, who threatens him. Boyd, in turn, vows to kill Markham, setting the stage for future conflict.

Season 6, Episode 4: The Trash and the Snake - Raylan confronts Markham about his land acquisitions while Ava, pressured by Katherine, fears exposure as an informant. Boyd and Duffy seek a safecracker, "The Wiz," to breach Markham's vault. The Wiz accidentally blows himself up during a demonstration. Ava, increasingly desperate, is caught between Boyd and the authorities. The episode concludes with Boyd informing Ava of his plans to stay in Harlan and start a legal marijuana farm.

Season 6, Episode 5: Sounding - Ava's anxiety peaks, leading her to seek escape via Limehouse, but Raylan intervenes, promising protection. Boyd recruits Ava's uncle Zachariah for a heist. Choo-Choo accidentally kills Calhoun. Raylan and Ava share a kiss, complicating their arrangement. Ava returns to Boyd, her fate uncertain.

Season 6, Episode 6: Alive Day - Raylan investigates Calhoun's murder, which leads back to Markham's crew. Boyd's mining heist is underway, but Zachariah may have ulterior motives. Choo-Choo is tasked with killing a prostitute but hesitates. In a shootout with Raylan and Tim, Choo-Choo is shot but escapes. He then attempts suicide by train, but the attempt fails.

Season 6, Episode 7: The Hunt - Boyd takes Ava to his family's cabin, suspecting she's the informant. Ava confesses, leading to a tense confrontation. Walker, on the run, kills two paramedics. Raylan spends time with Winona and Willa, rekindling their relationship. Boyd gives Ava a gun, testing her loyalty, but secretly unloads it. The episode concludes with Boyd reloading the gun, leaving Ava's fate uncertain.

Season 6, Episode 8: Dark as a Dungeon - Raylan clears out Arlo's house, burning his past. He partners with Markham to catch Walker, while Boyd plans to rob Markham's vault. Ty Walker is shot by Raylan when he tries to escape. Raylan delivers Boyd to Markham to collect the bounty, intending to disrupt their dynamic. The episode concludes with Raylan confronting the ghost of Arlo in the empty shed.

Season 6, Episode 9: Burned - Raylan pressures Wynn Duffy into informing on Boyd. Boyd's heist is foiled when Zachariah betrays him, though Carl saves him. Katherine kills Seabass for demanding more money. Raylan reveals to Avery that he believes he is being robbed. The episode concludes with Boyd more desperate than ever to get Markham's money.

Season 6, Episode 10: Trust - Ava, facing prison, reveals Dewey Crowe's necklace to Raylan, offering to implicate Boyd in his murder. Boyd, after kidnapping Katherine, gets Avery to hand over his money, only for Ava to shoot Boyd. She then steals the money and flees, leaving Raylan to promise pursuit.

Season 6, Episode 11: Fugitive Number One - The Marshals hunt Ava, now "Fugitive Number One". Boyd escapes the hospital after killing Carl. Katherine confronts Wynn about being a snitch, but Mikey kills Katherine to protect Wynn. Raylan goes rogue, and Art vows to bring him in.

Season 6, Episode 12: Collateral - Raylan and Boyd hunt for Ava in the mountains while Markham seeks new allies. Zachariah ambushes Boyd, but dies in an explosion. Raylan signs over Arlo's land. Loretta partners with Markham. Boyd wounds Bob. Raylan, after turning in his badge, is caught by the law.

Season 6, Episode 13: The Promise - Raylan arrests Boyd, but releases him to draw, hoping to end their conflict. Boyd refuses, and Avery Markham is killed by Boyd. Raylan faces Boon in a final shootout. Four years later, Raylan visits Boyd in prison, lying about Ava's death. The series concludes with Raylan visiting Ava, now free and raising her son.