Season 4

1. America the Beautiful

In North Carolina, Jamie and Claire plan to sell Geillis's gemstones to pay for everyone's passage back to Scotland. They help thief Stephen Bonnet, who has fled his execution, escape recapture. Jamie and Claire decide to stay in America to start a new life; Fergus and Marsali, who is pregnant, decide to stay as well. En route to visit Jamie's aunt, he and Claire are attacked and robbed by Stephen and his gang of bandits. Stephen takes the jewels, as well as Claire's wedding ring, and kills Jamie's associate Lesley.

2. Do No Harm

Jamie, Claire, and Young Ian arrive at River Run, the sprawling plantation of Jamie's maternal aunt, Jocasta MacKenzie Cameron. Claire is uncomfortable that Jocasta owns slaves, and when she names Jamie as her heir, he reveals his intent to somehow free them. Jocasta's friend Farquard tries to convince him of the futility of such an attempt. A slave attacks a white overseer; Claire and Jamie save the critically injured slave from immediate execution, but an angry mob demands they hand him over. Forced to comply, Claire euthanises him first.

3. The False Bride

To Jocasta's disappointment, Jamie and Claire decide to leave River Run and make a life of their own elsewhere. Lost in the woods during a storm, Claire finds a human skull and a stone pendant, and sees a ghost of an Indian. She and Jamie follow mysterious footprints that lead them back together. Claire notices modern silver fillings in the skull, which means the deceased had been a time traveller as well. They come to a beautiful stretch of land and decide to claim it. Back in 1970, Brianna and Roger reunite to take a trip to North Carolina. He proposes but she is not ready, a response that sparks an argument between them.

4. Common Ground

Accepting Governor William Tryon 's offer of land, Jamie and Claire settle in what Jamie has named Fraser's Ridge. They are hassled by a group of Cherokee warriors, and a bear. Jamie is attacked by the bear and kills it, learning that it is actually a Cherokee banished for rape. He and the tribe agree to live with each other in peace. In 1971, Roger learns of Jamie and Claire's settlement in North Carolina and calls Brianna to tell her that her parents found each other. He later learns that the Frasers had perished in a fire, but decides not to tell Brianna. Meanwhile, she has travelled to Scotland without telling Roger, to "see her mother".

5. Savages

Claire delivers Petronella Mueller's baby, but Petronella, her baby, and her brother-in-law soon die of the measles. Believing the Cherokee cursed him, a distraught Gerhard Mueller scalps the healer Adawehi, Claire's friend, in revenge. The Indians retaliate, killing Gerhard and his wife and burning their house. Meanwhile, Jamie is reunited with Murtagh, who is now a blacksmith in a nearby town. In 1971, Roger tracks Brianna to Inverness, where she has gone through the standing stones of Craig Na Dunn to warn her parents of their imminent destiny.

6. Blood of My Blood

Lord John comes to Fraser's Ridge with young William. Murtagh learns that William is Jamie's son, but agrees to keep the secret. Jamie takes the fully grown William hunting and fishing in the forest while Claire nurses John, who has contracted measles. William angers the Cherokee by taking a fish from one of their traps, and Jamie is willing to sacrifice himself to protect his illegitimate son. John recovers, and Jamie is pained to see William leave thereafter.

7. Down the Rabbit Hole

Brianna, having arrived in 1769, makes her way across Scotland, twisting her ankle and collapsing in the cold until she is found and taken in by none other than Laoghaire. Roger, following Brianna through the stones, joins the crew of Stephen Bonnet's ship to follow her to America. Brianna remembers the days before Frank's death. Laoghaire realises that Brianna is Claire and Jamie's daughter and decides to have her burned as a witch, but Joan, Laoghaire's youngest daughter, takes Brianna to Lallybroch. During the crossing, Roger tries to help his ancestor, Morag MacKenzie, avoid Stephen's cruelty. After being taken to a harbor town by her uncle Ian, Brianna is approached by an indentured servant Joseph Wemyss, who begs Brianna to take his daughter, Elizabeth, as her servant so she doesn't become his master's concubine. Brianna agrees and books passage to America for them both.

8. Wilmington

Roger and Brianna are reunited in Wilmington and exchange handfasting vows, but she learns that he knew that her parents would die and did not tell her, and pushes him away, telling him to return to the 1980s. Claire and Jamie are introduced to George Washington, and Jamie is alerted to an ambush set for Murtagh and his fellow insurgents. Claire performs emergency surgery on Edmund Fanning while Jamie secretly sends Fergus to warn Murtagh. Brianna encounters Stephen Bonnet and recognizes the wedding ring he is holding is Claire's; Bonnet rapes her as payment for the ring.

9. The Birds & The Bees

Brianna finds Jamie in Wilmington, and is reunited with Claire. Roger is forced to rejoin Stephen's crew for the rest of his voyage, but is determined to return to Brianna. Claire guesses that Brianna is pregnant, and Brianna admits that she was raped. Roger comes to Fraser's Ridge, but Lizzie mistakenly identifies Roger to Jamie as Brianna's attacker, and Jamie beats Roger senseless and tells Young Ian to dispose of him. Claire finds the ring, and realises that Stephen is Brianna's rapist.

10. The Deep Heart's Core

Roger is a prisoner of the Mohawk, and vows to escape them and reunite with Brianna. Meanwhile, Brianna considers an abortion, which Claire warns would be dangerous. Brianna learns what Jamie did and straightens out the misidentification between Roger and Stephen Bonnet. Furioous, she demands Jamie, Claire, and Young Ian recover Roger, while Murtagh brings Brianna and Lizzie to Jocasta's plantation. Roger escapes in the woods, stumbles upon a standing stone ring, and considers whether to return to his own time.

11. If Not for Hope

Roger has stayed in the past, and has been recaptured by the Mohawk. At River Run, Jocasta holds a dinner party of unmarried men as potential suitors for Brianna, concerned for the future of an unwed and pregnant niece. Lord John arrives and learns that Brianna is pregnant, and she later spies him having sex with another male guest, Judge Alderdyce. Knowing that Gerald Forbes plans to propose, Brianna asks John to marry her, believing she will be safe with him. He refuses, but then relents after she tells him about her assault and her current predicament. Murtagh and Fergus capture Stephen at Jamie's request, but Murtagh and Stephen are caught by the authorities. As Jamie tracks Roger, he feels guilty for beating him, and for the harsh things he said to Brianna.

12. Providence

While Fergus plots to break Murtagh out of jail in Wilmington, Brianna insists Lord John bring her to confront Stephen, who has been incarcerated in the same place. She confronts Stephen and offers her forgiveness, though swearing that her baby will never know he existed. A badly-injured Roger arrives at the Mohawk encampment in the upstate area of the Province of New York; he meets Father Alexandre Ferigault, another captive. Ferigault had lived among the Mohawk and fathered a child with one of them, Johiehon, but due to his sin felt unworthy to baptise the baby.

Alexandre is tortured but will not perform the ritual, and is finally subjected to the painfully slow and deadly burning of his feet at the stake. Roger escapes, but comes back to throw accelerant on the fire to put Alexandre out of his misery. Johiehon puts down her baby and joins Alexandre in the flames. As a chained Stephen scrambles to reach a dropped set of keys, Fergus and Murtagh send Brianna and John away and then flee the jail, which they destroy with explosives to cover their flight.

13. Man of Worth

Brianna gives birth to a boy at River Run. Jamie, Claire, and Young Ian arrive at the Mohawk settlement, but the natives are alarmed by the stone pendant Claire is wearing and send the Frasers away. A group of Mohawk come to Jamie and Claire's camp seeking the stone, which belonged to a former member of their tribe, Otter Tooth, who had prophesied the destruction of the Mohawk. Claire had previously determined from his skull that this man was also a time traveler. The Frasers convince the group to help them free Roger.

They are caught in the attempt, but ultimately Young Ian offers himself as a replacement for Roger. On the journey back to North Carolina, Claire tells Roger about Brianna's rape and pregnancy, giving him the chance to decide if he can raise a child that may not be his. Brianna is devastated when Claire and Jamie return to River Run alone, but Roger appears before they depart for Fraser's Ridge and declares his love for Brianna. Jamie receives a letter from Governor Tryon telling him to find and kill the leader of the Regulators: Murtagh.