As a child, Juliet Carlson is devastated to learn her parents (Michael Trisler and Amy Stewart) are getting a divorce; her mother explains that although they love each other, they are not meant to be together. Juliet grows up to become a
fertility doctor living in
Miami, Florida, with her sister Rachel Carlson (
Robin Weigert). Under her married name of Juliet Burke, she works for her ex-husband Edmund Burke (
Željko Ivanek) as a researcher at Miami Central University. She performs unauthorised experiments attempting to restore Rachel's fertility, as her
reproductive system has been ravaged by
chemotherapy and rendered sterile. Juliet even manages to impregnate a male mouse during a test trial, though it does not carry to term. In 2001, Juliet is approached by
Richard Alpert (
Néstor Carbonell) of
Mittelos Bioscience who offers her a job in
Portland, Oregon. Stating that Edmund would never allow her to leave the university, Juliet sarcastically jokes she would only be able to accept the offer "if he were hit by a bus". Juliet learns from Rachel that her experiments worked as she is finally pregnant. As she informs Edmund that she does not want the news published to maintain Rachel's privacy, he is hit and killed by a bus. Richard and
Ethan Rom (
William Mapother) show up at the morgue to offer Juliet another chance to accept the job to which she agrees, believing it would only last six months somewhere "not quite in Portland."
Arrival on the Island Juliet awakens aboard
Galaga submarine. Ethan helps her up and she disembarks onto a pier where she is greeted by
Benjamin "Ben" Linus (
Michael Emerson), the leader of "the Others", who welcomes her to the Island. In September 2001, after the six months on the Island that she agreed to passes, Juliet tells Ben the fertility problem causing pregnant women to die occurs during
conception. Juliet reasons there is nothing more she can do and asks to go home, but Ben informs her that Rachel's cancer has returned and promises to cure it if she stays on the Island to continue her work. While discussing the novel
Carrie, Juliet and the Others witness Oceanic Flight 815 crashing on the Island on September 22, 2004.
Following the crash Immediately after the plane crashes, Ben dispatches Goodwin and Ethan to infiltrate the survivors; it soon becomes apparent that Ben sent Goodwin away out of jealousy for Juliet's affections. At the
Flame station,
Mikhail Bakunin (
Andrew Divoff) shows Juliet live footage of a cancer-free Rachel with her two-year-old son, Julian, presumably named after her. Juliet breaks down into tears and unsuccessfully pleads with Ben to let her go home to her family. Juliet helps take care of the young crash survivors that are kidnapped by the Others, including Zack (Mickey Graue) and Emma (Kiersten Havelock). The Others later manage to capture Walt's father,
Michael Dawson (
Harold Perrineau). Juliet visits Michael and informs him that the Others have agreed to give him a boat in exchange for his help in freeing Ben, who has been caught by the survivors. Juliet comments that Walt is "special" and should be taken away from the Island as soon as possible.
Season 3 Juliet is assigned to watch and interrogate
Jack Shephard (
Matthew Fox), who has been captured by the Others and held in the underwater section of the
Hydra station, located on a small island two miles offshore from the main Island. She later seeks Jack's help in operating on Colleen Pickett (
Paula Malcomson) when she is shot, though the surgery proves unsuccessful. In the operating room, Jack notices Ben's x-rays on the wall and deduces that he was kidnapped to remove his tumor. Juliet is sent to convince Jack to operate on Ben, but she surreptitiously plays a video of herself using
cue cards telling Jack to kill Ben during the surgery and to make it look like an accident. Jack agrees to do the surgery but ends up slitting Ben's kidney sac to blackmail the Others into letting
James "Sawyer" Ford (
Josh Holloway) and
Kate Austen (
Evangeline Lilly) go. In an attempt to force Jack to play his role in her scheme to kill Ben, Juliet threatens to have Sawyer and Kate killed, after which Jack reveals Juliet's treachery to the Others. Ben wakes up during the surgery and concedes to Jack's demands, privately asking Juliet to help Sawyer and Kate escape in exchange for her freedom and finally letting her off the Island. She finds Sawyer and Kate held at gunpoint by
Danny Pickett (
Michael Bowen), whom she shoots and kills on the spot before helping the two escape from Hydra Island back to the main Island. As part of their deal, Ben "allows" Juliet and Jack to use the Others' submarine to finally leave the Island but before they can depart,
John Locke (
Terry O'Quinn) is subtly manipulated by Ben into destroying the submarine with explosives. Prevented from leaving the Island once more, Juliet is asked by Ben to infiltrate the survivors' camp, gain their trust and mark the tents of their pregnant women so the Others can kidnap them. Juliet handcuffs herself to Kate in the jungle, where she pretends to have been gassed and abandoned with her. When "
the Monster" chases them, Juliet unlocks the handcuffs and activates the Others' sonar fence to repel it. She and Kate then reunite with Jack and
Sayid Jarrah (
Naveen Andrews) at the Barracks, and they make their way back to the castaways' beach camp. Sayid, Sawyer and the rest of the survivors are quick to express their skepticism and suspicions of Juliet but Jack declares her under his "protection". The Others activate an implant they previously placed in
Claire Littleton (
Emilie de Ravin), allowing Juliet to help her by offering a prepared solution, thereby gaining the survivors' trust and respect. Upon learning that
Sun-Hwa Kwon (
Yunjin Kim) is pregnant, she takes her to the
Staff station to perform an
ultrasound; Juliet confirms that Sun conceived on the Island, giving the latter two months left to live until her second
trimester. That night, Juliet commits to betraying the Others and siding with the survivors, confessing everything to Jack about the Others' plans for the pregnant women in the camp. After Kate informs Jack and Juliet of
Naomi Dorrit's (
Marsha Thomason) arrival on the Island, the two abruptly venture off into the jungle to find
Danielle Rousseau (
Mira Furlan) and form a plan to resist the Others using Juliet's inside knowledge of their methods. They return to discover Sawyer and Sayid outing Juliet as a
mole for the Others with intelligence provided by Locke while he was at Ben's camp. Juliet, Jack and Rousseau then let the rest of the survivors in on their plan: Juliet would falsely mark the empty tents of the pregnant women and when the Others arrive to kidnap them, a trap would be activated with the
dynamite they retrieved from the
Black Rock to kill the Others. When
Karl Martin (
Blake Bashoff) warns of the Others' early arrival at the behest of
Alex Rousseau (
Tania Raymonde), the survivors move up their schedule and divide into three groups: Sayid,
Jin-Soo Kwon (
Daniel Dae Kim) and
Bernard Nadler (
Sam Anderson) remain at the beach camp to spring the trap;
Charlie Pace (
Dominic Monaghan) and
Desmond Hume (
Henry Ian Cusick) follow Juliet's instructions to breach the
Looking Glass station and disable its signal jammer; and Jack and Juliet lead the rest of the group to the Island's radio tower in hopes of using Naomi's satellite phone to call for rescue. When Sayid's part of the plan backfires, Juliet gives Jack a kiss and joins Sawyer in rescuing their captured allies on the beach. After
Hugo "Hurley" Reyes (
Jorge Garcia) causes a distraction that results in the deaths of the remaining Others, Juliet subdues
Tom Friendly (
M.C. Gainey) and Sawyer kills him for kidnapping Walt.
Season 4 Juliet and the survivors on the beach reunite with Desmond who reveals that before Charlie died, he warned that Naomi and her crew on the
Kahana freighter are not on the Island to rescue the castaways. All of the survivors rendezvous in the jungle and fracture into two groups: Jack's camp heads back to the beach to negotiate rescue with the freighter; while Locke, believing that those arriving on the Island intend to do them harm, leads his faction to the Others' former Barracks. Juliet remains on Jack's side. She and Sayid express their distrust of the newcomers and track Jack down in the jungle, where he and Kate are being held at gunpoint by two of the
Kahana's science team,
Daniel Faraday (
Jeremy Davies) and
Miles Straume (
Ken Leung). Juliet and Sayid subdue and force them to reveal the location of their
helicopter. When she treats the head wound of the pilot,
Frank Lapidus (
Jeff Fahey), he realizes her name was not on the manifest of Oceanic Flight 815 and asks her where Ben is. Juliet brings Desmond to the copter so that he and Sayid can head to the
Kahana so as to determine its crew's true motives. Juliet returns to the beach camp with Jack, Daniel and
Charlotte Lewis (
Rebecca Mader). They dial the emergency number of the newcomers' satellite phone to contact the
Kahana and are informed by the freighter crew that the copter has not yet made it to them. Juliet and Jack grow more suspicious of Daniel and Charlotte after receiving a mysteriously delayed call from Sayid, and Daniel is pressured into revealing that
time flows in a
different manner to and from the Island. When Daniel and Charlotte disappear without notice, Juliet and Jack head into the forest to search for them. Juliet is confronted by Harper — her former therapist — on the behalf of Ben, who warns that Daniel and Charlotte intend to release a chemical gas at the
Tempest station that will kill everyone on the Island. Juliet arrives at the Tempest and subdues Charlotte but Daniel pleads their mission is to render the gas inert to prevent Ben from using it. Juliet believes him and allows him to deactivate the station before reuniting with Jack outside. She informs Jack of Ben's possessive obsession with her and tearfully warns him of the threat Ben poses to those she loves; Jack insists that he is here to stay and kisses Juliet. When the corpse of freighter doctor Ray (
Marc Vann) washes ashore, Juliet and Jack interrogate Daniel who reveals they never intended to rescue anyone on the Island. Jack stumbles in pain and collapses. Juliet diagnoses Jack with
appendicitis and operates on him with Bernard's assistance. Following the
appendectomy, she reveals to Kate that they kissed but it was only for Jack to prove he "doesn't love someone else." Juliet notes that Jack is awake and had overheard their conversation. As she scolds Jack for walking about when he should be recovering from surgery, the freighter's copter flies over the beach camp and a package is thrown down. In it, the castaways find a satellite phone tracking the chopper. Against Juliet's wishes, Jack decides to follow the phone's signal to the
Orchid station. Sayid returns in the Zodiac raft to start ferrying people at the beach camp to the
Kahana, revealing that
Charles Widmore's (
Alan Dale) mercenaries, led by
Martin Keamy (
Kevin Durand) on the chopper, intend to kill the survivors; Juliet insists that Sun boards the raft first since she is pregnant and tells Daniel she will not leave the Island until everyone is safe aboard the freighter. Sawyer, after having jumped off the copter, arrives on the beach and finds Juliet alone drinking a bottle of
rum. She tells Sawyer she is not celebrating and motions to the smoke emanating from the destroyed freighter. The two drink together on the beach before the sky turns purple as a result of Ben using the Orchid station to "move" the Island. Juliet, Sawyer and the entire Island then disappear in a flash of light.
Season 5 Juliet and Sawyer meet with Bernard and
Rose Nadler (
L. Scott Caldwell) who note the beach camp has disappeared. Daniel informs the remaining survivors on the Island that they have been "dislodged" and are
"skipping" through time. Juliet discovers the
Swan station's hatch still intact but Daniel explains that attempting to alter the past is pointless, reasoning, "Whatever happened, happened." Juliet and Sawyer become the group's new leaders before they are set upon by a rain of fiery arrows from the Others of 1954. The survivors scatter into the jungle where Locke saves Juliet and Sawyer. They find the Others' camp and rescue Daniel, who warns the Others to bury the "Jughead"
hydrogen bomb to prevent it from detonating. The castaways are briefly transported to 2004 and a post-2007 time era. They use
outrigger canoes to paddle to the Orchid station, where Locke believes he can stop the flashes, and are chased by another boat until they are shifted to 1988. Sawyer tells Juliet he briefly saw Kate in 2004 but didn't approach her because "What's done is done." Juliet's nose starts bleeding, which Daniel states is a temporal effect of how long one has been on the Island. As the time-shifts intensify, Locke hastily descends into the Orchid and moves the frozen wheel causing a particularly violent flash. Juliet and the survivors find that their nosebleeds and headaches have subsided, causing Daniel to affirm they are now permanently fixed in 1974. Sawyer says they will wait "as long as it takes" for Locke to return. They save a woman named
Amy (
Reiko Aylesworth), who is held at gunpoint by two Others. Amy leads the survivors back to the
Dharma Initiative's Barracks, which have yet to be taken over by the Others during "
the Purge". Sawyer fabricates a cover story that his crew was shipwrecked while searching for the
Black Rock.
Horace Goodspeed (
Doug Hutchison) insists that they board the
Galaga submarine and leave the Island in the morning but after Sawyer helps him resolve a dispute over Dharma's "truce" with the Others, Horace gives the group two weeks to wait for Locke's return. Juliet, having been kept on the Island by Ben against her will for over three years, expresses her intention to leave despite it being 1974, but Sawyer convinces her to stay for another "two weeks". Jin finds Jack, Kate and Hurley in the jungle. Juliet suggests passing the three off as new Dharma recruits. Juliet is able to stabilize Ben but not heal him, and she scolds Jack for refusing to help. Agreeing "it's wrong to let a child die" even if he will grow up to cause them harm, Juliet and Sawyer take Ben to the Others, who are able to save his life at the cost of his innocence.
Phil (
Patrick Fischler) discovers Juliet and Sawyer's actions. When they are interrogated by Radzinsky and Dr.
Pierre Chang (
François Chau), Sawyer agrees to reveal Jack's location if he and Juliet are allowed off the Island on the Dharma submarine. Sawyer apologises to Juliet for not listening when she wanted to leave three years ago to which she replies, "I'm glad you talked me out of it." Aboard the
Galaga, Juliet and Sawyer profess their love and discuss their freedom once they dock in the "real world". Damaged by her parents' divorce, Juliet becomes convinced Sawyer still has feelings for Kate and decides to support Jack's plan, reasoning she won't have to lose Sawyer if she never meets him. When Jack throws the Jughead down the Swan shaft, Juliet is dragged into the breached electromagnetic pocket by loose chains. Sawyer catches her hand and refuses to let go. To avoid pulling Sawyer down the hatch with her, Juliet tells him she loves him and releases her grip. She survives the fall and finds the Jughead next to her. Hoping to prevent any of them from ever arriving on the Island, she uses a rock to strike the device, causing it to explode. Still buried under the rubble of the Swan, Juliet cries for help. Sawyer and the survivors hear her and frantically begin to dig her out. When he reaches her, she says, "We should get coffee sometime... we can go Dutch." The two share a kiss and, finally believing that Sawyer's heart belongs to her, Juliet succumbs to her injuries and passes away before she is able to tell him something "really, really important." A devastated Sawyer holds her body tight and breaks down into tears. After they bury Juliet, Sawyer forces Miles to '
read' her; Miles reveals that Juliet's message to him was "It worked." Sawyer returns to his and Juliet's house at the Barracks to recover an
engagement ring he had hidden, and tells Kate that he was going to ask Juliet to marry him. Sawyer later sees Juliet's surname - Burke - crossed out on
Jacob's (
Mark Pellegrino) wall in the cliffside cave, revealing she was candidate number 58.
Flash sideways In the "flash sideways timeline", Dr. Juliet Carlson works as a maternity doctor at St. Sebastian Hospital in
Los Angeles, California, alongside Jack, who is her ex-husband. She and Jack have a son named David (
Dylan Minnette), who lives with Juliet and visits Jack once a month. She performs an ultrasound on Sun, causing Sun and Jin to "remember". Juliet is given tickets by Jack so she can take David and Claire, revealed to be Jack's half-sister, to a concert. While waiting in line for the event, Juliet receives a page from the hospital and departs. Later at the hospital, Juliet notices Sawyer fishing a candy bar from a vending machine. She suggests unplugging and plugging it back in and once it is free, she remarks, "It worked" - her original dying words. When Juliet passes Sawyer the candy, they experience vision-like flashes of their past. She tells Sawyer, "We should get coffee sometime... we can go Dutch." This mirrors their conversation before Juliet died in Sawyer's arms indicating that as she was passing, her consciousness was already meeting Sawyer again in this "flash sideways reality". Juliet and Sawyer touch once more and fully regain their memories of their lives together. They realize the "flash sideways" is, in fact, a
purgatory the survivors on the Island created so they could find each other after death and move on together; physical contact with one's "constant" (the person one loved the most) would "awaken" them and cause them to "remember". Having finally been reunited, Juliet and Sawyer embrace and passionately kiss. Juliet, now wearing her engagement ring, makes her way to the church with Sawyer where they gather with the other former denizens of the Island. As
Christian Shephard (
John Terry) opens the church doors, a glowing white light flows in and Juliet and Sawyer move on to the
afterlife together as soulmates. ==Development==