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Lost Season 1

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Here's where to watch every episode of Lost season 1. Mouseover or tap an episode to see where to stream it. Click or tap the play icon to stream it on the best available service.
Season 01, Episode 01 Pilot Part 1

S01 E01

Sep 23, 2004
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Pilot Part 1 Sep 23, 2004 Stripped of everything, the 48 survivors scavenge what they can from the plane for their survival. Some panic. Some pin their hopes on rescue. A few find inner strength they never knew they had-like Kate who, with no medical training, suddenly finds herself suturing the doctor's wounds. The band of friends, family, enemies and strangers must work together against the cruel weather and harsh terrain. But the intense howls of mysterious creatures stalking the jungle fill them all with fear. Fortunately, thanks to the calm leadership of quick-thinking Jack and level-headed Kate, they have hope. But even heroes have secrets, as the survivors will come to learn.

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Season 01, Episode 02 Pilot Part 2

S01 E02

Sep 30, 2004
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Pilot Part 2 Sep 30, 2004 Having escaped the "creature" and retrieved the plane transceiver, a group of the survivors travel to higher ground so they can transmit a signal. En route, they receive a mysterious transmission and encounter another of the island's inhabitants. Meanwhile, back at camp, Jack tends to a wounded man who reveals a secret about Kate.

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Season 01, Episode 03 Tabula Rasa

S01 E03

Oct 7, 2004
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Tabula Rasa Oct 7, 2004 Jack and Hurley discover an alarming secret about Kate, as the marshal's life hangs in the balance and he suffers a lot of pain. Meanwhile Kate, Charlie, Sawyer, Sayid, Boone and Shannon ponder the mysteries they have begun to uncover and worry that telling the other survivors will cause panic. They decide to lie for the time being. Also, Locke's befriending of Walt disturbs Michael, but Walt is more concerned in finding his dog. Lastly, Kate flashes back to when she was arrested by the marshal in Australia.

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Season 01, Episode 04 Walkabout

S01 E04

Oct 14, 2004
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Walkabout Oct 14, 2004 The survivors are jolted awake in the middle of the night when wild island beasts (which are wild boars) invade the beach encampment. Kate and Michael join the mysterious Locke on a hunt for food -- and a shocking secret about Locke is revealed. On the hunt for food someone is injured. Meanwhile, some survivors are horrified by Jack's plan for the dead bodies still scattered among the wreckage -- he wants to burn them. Jack sees someone that's not there, and we find out that one of the survivors was not able to walk but now he can.

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Season 01, Episode 05 White Rabbit

S01 E05

Oct 21, 2004
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White Rabbit Oct 21, 2004 Jack is nearly delirious from lack of sleep and struggles to overcome the haunting events that brought him to Australia and, subsequently, to the island. Meanwhile, Boone gets caught in a treacherous riptide trying to save a woman who went out swimming. A pregnant Claire's health takes a bad turn from lack of fluids, and a thief may have stolen the last bottles of water. Veronica Hamel guest-stars as Jack's mother, Margo. Also, Jack flashes back at 12 years old, to find himself on the playground in an altercation with a bully, who ultimately beats him up, and later learns a life lesson from his father.

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Season 01, Episode 06 House of the Rising Sun

S01 E06

Oct 28, 2004
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House of the Rising Sun Oct 28, 2004 Walt and the others are shocked when Michael is brutally beaten, but only the non-English-speaking Jin and Sun know the truth behind the attack. Meanwhile Kate, Jack, Sawyer and Sayid argue about where the survivors should camp -- on the beach, where they're more likely to be seen, or in a remote inland valley where fresh water abounds; and Locke discovers Charlie's secret.

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Season 01, Episode 07 The Moth

S01 E07

Nov 4, 2004
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The Moth Nov 4, 2004 Charlie begins a painful journey of withdrawal from drugs, surprisingly aided by Locke, whose true motive for helping Charlie is a mystery. Meanwhile, survivors struggle to find and free Jack when he's buried alive in a cave collapse, and someone might be secretly thwarting Sayid, Kate, and Boone when they enact a plan to find the source of the French transmission.

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Season 01, Episode 08 Confidence Man

S01 E08

Nov 11, 2004
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Confidence Man Nov 11, 2004 Shannon's inhaler runs out and Boone believes Sawyer has the remaining three in his stash. When Sawyer refuses to give them up, Jack and Sayid resort to torturing Sawyer until he agrees to reveal the location of the inhalers. In flashback we hear Sawyer's story and find he is not who he says he is.

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Season 01, Episode 09 Solitary

S01 E09

Nov 18, 2004
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Solitary Nov 18, 2004 Sayid's life is placed in grave danger after he stumbles upon the source of the mysterious French transmission, the woman Danielle Rousseau (guest-star Mira Furlan). She was on the distress call and is found alive. Meanwhile, Hurley has a ridiculous plan to make life on the island a little more civilized. The plan involves golf clubs he finds in the debris, and it looks like it just might work. Lastly, we flash back to Sayid's childhood friend Nadia as well as his participation in hostage situations in Iraq.

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Season 01, Episode 10 Raised by Another

S01 E10

Dec 2, 2004
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Raised by Another Dec 2, 2004 Claire has a horribly realistic nightmare about her new baby being harmed or kidnapped. Flashbacks reveal Claire's backstory: the former boyfriend who got her pregnant, then abandoned her, and the psychic who convinced her to take the ill-fated flight that landed her on the island. Hurley is shocked and confused when he discovers that Ethan Rom (guest-star William Mapother), another plane crash survivor, does not appear on the flight manifest.

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Season 01, Episode 11 All the Best Cowboys Have Daddy Issues

S01 E11

Dec 9, 2004
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All the Best Cowboys Have Daddy Issues Dec 9, 2004 Survivors wonder why Charlie and Claire have been abducted - and by whom - and a search party ventures into the treacherous jungle to look for the pair. Suspicions focus on Ethan Rom (guest-star William Mapother), who, it was recently discovered, was not a passenger on the doomed flight. Jack battles inner demons relating to his father, while Boone and Locke discover another island mystery.

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Season 01, Episode 12 Whatever the Case May Be

S01 E12

Jan 6, 2005
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Whatever the Case May Be Jan 6, 2005 Jack, Kate and Sawyer fight over possession of a newly discovered locked metal briefcase which might contain insights into Kate's mysterious past. Meanwhile, Sayid asks a reluctant Shannon to translate notes he took from the French woman. A rising tide threatens to engulf the fuselage and the entire beach encampment, and Rose and a grieving Charlie tentatively bond over Claire's baffling kidnapping.

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Season 01, Episode 13 Hearts and Minds

S01 E13

Jan 13, 2005
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Hearts and Minds Jan 13, 2005 When Locke learns that Boone wants to share their "secret" with Shannon, Locke decides to teach him a lesson. This leads to Shannon's life being placed in what seems like peril. Boone and Shannon's dark past is revealed in a shocking backstory that recalls their relationship right before the plane crash and presages the return of the beast. Kate, who has become a confidante to the soft-spoken Sun, is puzzled by Sun's mysterious behavior and the revelation that she can speak English. A hungry Hurley must convince Jin to share his fish by making up for offending Jin by rejecting his offer of raw fish early on, or he'll continue to suffer digestive problems from the limited island diet.

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Season 01, Episode 14 Special

S01 E14

Jan 20, 2005
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Special Jan 20, 2005 Violence ensues and a mysterious island beast makes a re-appearance when Michael and Locke clash over Walt's upbringing. Meanwhile, Charlie is tempted to read the missing Claire's diary, and Sayid enlists Shannon to help decipher the French woman's map.

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Season 01, Episode 15 Homecoming

S01 E15

Feb 10, 2005
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Homecoming Feb 10, 2005 After the missing Claire returns with no recollection of what has happened since before she boarded the doomed Oceanic flight 815, Jack and Locke formulate a plan of defense against her kidnapper, the mysterious Ethan (guest-star William Mapother), who threatens to kill off the other survivors one by one unless Claire is returned to him. Meanwhile, the disappointment Charlie feels when Claire does not remember him triggers recollections of a woman he had let down in the past.

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Season 01, Episode 16 Outlaws

S01 E16

Feb 17, 2005
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Outlaws Feb 17, 2005 Kate and Sawyer divulge dark secrets to each other while tracking a renegade boar that Sawyer swears is purposely harassing him. Hurley and Sayid worry that Charlie is losing it after facing a brush with death and killing Ethan with 6 bullets to the chest. A shocking prior connection between Sawyer and Jack is revealed in a flashback which shows Sawyer meeting Jack's father in a bar. Robert Patrick ("Terminator 2: Judgment Day," "The X-File") guest stars.

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Season 01, Episode 17 ...In Translation

S01 E17

Feb 24, 2005
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...In Translation Feb 24, 2005 When the raft the survivors have been building mysteriously burns down, Michael is convinced that Jin is responsible for the sabotage, which only serves to escalate their rivalry. Meanwhile, Sun stuns her fellow survivors with a surprising revelation, and Boone gives Sayid a warning about his step-sister Shannon. Lastly, more details of Jin and Sun's troubled marriage are revealed through flashbacks.

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Season 01, Episode 18 Numbers

S01 E18

Mar 3, 2005
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Numbers Mar 3, 2005 When Hurley becomes obsessed with the French woman and heads into the jungle to find her, Jack, Sayid and Charlie have no choice but to follow. Hurley flashes back to the hugely life-altering experience he had before boarding the plane.

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Season 01, Episode 19 Deus Ex Machina

S01 E19

Mar 31, 2005
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Deus Ex Machina Mar 31, 2005 Locke thinks he's being sent a sign on how to get the hatch open, and he and Boone venture inland. Jack is reluctant to offer assistance when Sawyer begins to experience excruciating headaches and needs glasses.

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Season 01, Episode 20 Do No Harm

S01 E20

Apr 7, 2005
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Do No Harm Apr 7, 2005 Jack tends to a severely wounded Boone after Locke returns him to the caves. In the confusion, Locke slips away to deal with his guilt over the crisis. Meanwhile, Claire unexpectedly goes into labor while deep in the forest.

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Season 01, Episode 21 The Greater Good

S01 E21

May 5, 2005
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The Greater Good May 5, 2005 After another funeral, tempers rise as the survivors' suspicions of each other grow, and an unlikely survivor vows revenge. The events that landed Sayid on Flight 815 play out as he engages Locke in a psychological game of cat and mouse to uncover the truth about the mishap that claimed Boone's life.

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Season 01, Episode 22 Born to Run

S01 E22

May 12, 2005
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Born to Run May 12, 2005 Jack suspects foul play when Michael becomes violently ill while building the raft. The suspects include Sawyer and Kate, who compete for the last seat on the raft and do anything possible to prevent each other from getting it. Meanwhile, a secret from Kate's past is revealed to the other survivors on the island.

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Season 01, Episode 23 Exodus Part 1

S01 E23

May 19, 2005
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Exodus Part 1 May 19, 2005 The French woman-Danielle Rousseau-shocks the survivors by showing up to the camp with a dire warning about "the Others" who are on the island, and the black smoke that precedes them. Meanwhile, Michael and Jin ready the raft for sailing. In flashbacks, we see the survivors final moments before they boarded their fateful flight.

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Season 01, Episode 24 Exodus Part 2

S01 E24

May 26, 2005
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Exodus Part 2 May 26, 2005 The castaways on the raft are surprised at sea by something unexpected. Meanwhile, remaining islanders attempt to blow open the hatch, and a visitor to the encampment might be a threat to Claire's infant son.

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Season 01, Episode 25 Exodus (Part 3)

S01 E25

May 25, 2005
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Exodus (Part 3) May 25, 2005 In the thrilling finale to the first season, a visitor to the encampment could be a threat to Claire's infant son.

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