Episode 12 of Season 7 of "Outlander" kicks off with John and Jamie slipping out of the town under the cover of darkness. Jamie's demeanor remains his cheerful self, contrasting sharply with John's palpable panic. Jamie reveals that at the checkpoint, soldiers attempted to frisk him, prompting their hasty escape and subsequent pursuit. As they finally take refuge in the forest, John, driven to his wits' end, confesses that he and Claire had intimate relations, with Jamie's image haunting their every move. Stunned by this revelation, Jamie reacts instinctively, punching John with a force that speaks volumes of his betrayal.
Back at the homestead, William confronts Claire about his origins, suspecting the worst of Geneva. Claire's attempts to clarify only deepen the chasm as William realizes the web of deceit spun by John, Isobel, and Jamie. Enraged, he wreaks havoc upon his surroundings, tearing through whatever comes within his reach, before storming off in a fit of despair. Amidst his lamentations about his birthright and John's duplicity, a hooker named Arabella approaches him, inviting him in. Unable to reign in his tumultuous emotions, William unleashes his fury upon her, prompting her to swiftly eject him from her premises.
Meanwhile, Jamie continues his relentless assault on John, demanding the whole truth, which John steadfastly refuses to divulge. Their altercation is abruptly interrupted by the arrival of American soldiers, who seize John as a prisoner, seeking revenge for the Paoli massacre orchestrated by his kinsman, General Charles Grey. The soldiers discover a letter on John, further incriminating him as a spy, despite his protests of no longer being a British soldier.
Elsewhere, Jamie secures an audience with George Washington, presenting letters of endorsement from their French allies. Impressed by Jamie's credentials, Washington elevates him to the rank of Brigadier General, commanding his own battalion.
In a parallel narrative, William finds himself enlisted in the task of evacuating Loyalists from the town, as American forces march in unyielding strength. During this operation, he encounters Rachel and Ian, who have returned disheartened from a visit to the belligerent Quakers, who denied them their blessing. Despite this setback, William offers his congratulations on their betrothal before his emotions boil over, resulting in a punch aimed at Ian.
The couple stands perplexed until he unveils his awareness of Jamie's truth, leaving Rachel unperturbed due to their striking resemblance, which fuels William's rage even more. In a fit of anger, William insults Jamie, provoking Ian to retaliate with a punch. A fierce melee breaks out, culminating in the Redcoats apprehending Ian. Rachel slaps William, expressing her sorrow at being compelled to abandon her commitment to non-violence. He attempts to kiss her, but she responds by spitting on him and rushes to Ian's side.
Elsewhere, Mrs. Figg, the diligent housekeeper, informs Claire of the impending evacuation. A letter, ordering John's recommissioning and discovered by the Americans, has been dispatched. However, John's fate takes him to Colonel Smith, a former acquaintance who treats him with a surprising kindness. Smith unfolds the tale of the ruthless Paoli massacre and Wayne's thirst for revenge. John volunteers information, prompting Smith to propose a meeting between him and Washington.
As they journey back to the town, Jamie catches sight of Ian, overjoyed to find him alive. Rachel recounts William's actions, prompting Jamie to confront him. William sullenly releases Ian but remains enraged at Jamie. Smith's doctor reveals himself as Denzell, who examines John's bruises. Shocked to witness a battered eye, John confesses that he deliberately provoked Jamie for a beating. Denzell's delight in Jamie's survival is cut short by Smith summoning him for a consultation. It transpires that John's death holds greater value than his life, as Smith has summoned Wayne, not Washington. They plan to execute John, and Denzell surreptitiously slips him a scalpel for his own protection.
That fateful night, William's squad forcibly escorts him to Arabella's brothel, a den of iniquity. Among the soldiers, Harkness stands out as a coarse and crude individual, prompting William to seek refuge by seducing Arabella, alias Jane, away from him. In a moment of solitude, William apologizes, insisting that his honor is the sole possession he still cherishes and refuses to compromise it by sleeping with her. Arabella, albeit indulging his whim, senses his underlying affection for her, and they eventually share a night of intimacy.
Elsewhere, Jamie finds his way to Claire, who is consumed by worry over John. He unveils John's desire for Jamie to end his life by pretending they had consummated their love, sparking Jamie's urge to uncover the entirety of the truth. Claire unburdens her soul, confessing her suicide attempt and the longing to feel something amidst her numbness. She admits to initiating their encounter, yearning for a connection that John willingly allowed, even enduring her blows.
Jamie's emotions swirl in turmoil as he inadvertently labels Claire as promiscuous and addicted to alcohol, wounding her deeply. Once he regains composure, he reveals his hurt stems from jealousy, grappling with self-reproach for harboring such feelings, especially considering John's pivotal role in nursing him back to health after Culloden and Geneva. They reconcile, affirming that nothing can tear them apart, with Claire reassuring Jamie of her unwavering commitment as his wife, leading to an intimate reunion.
As Episode 12 draws to a close, Smith grants John temporary refuge in his tent. However, John severs his bonds and flees into the dense forest. Smith soon discovers his absence and alerts the guards. In the midst of his escape, John is suddenly ambushed by a shot ringing out through the woods.