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See main article episode guide at Season 4

This page contains a summary of unconfirmed season 4 spoilers from unofficial sources. The source is mentioned for each spoiler. If spoilers repeat or expand upon earlier information, the more reputable or more complete sources are preferred. For season 4 spoilers confirmed by official sources, see Season 4.

Season 4 is confirmed to have a theme with a beginning, a middle and an end. [1]. A big difference between last season and the new one is that now we are going to see more group interaction. [2] There's a whole chapter of the story that takes place off the Island. The flashforward sequences are essentially a season-within-a-season. [3].

Note: All of the casting info that is circulated is based on extreme generalities, or in some cases, out and out deceptions by the producers.[4]. Filming does not always take place in a chronological order. [5]

Future episodes

Do not create episode pages until the title is confirmed by an official source such as (IMDb and other 3rd party sources do not qualify as an "official source").
Number Title Date Centric
409 TBA April 24th, 2008 Sayid (flash-forward)
410 TBA May 1st, 2008 TBA
411 TBA May 8th, 2008 TBA
412 TBA May 15th, 2008 TBA
413 TBA May 22nd, 2008 TBA

Episode 4x09

Episode 409's title is The Shape Of Things To Come. It is speculated to be Sayid centric, with Ben appearing in select scenes. It will air on April 24, 2008. Filming began March 10, 2008.

Date Source Spokesperson Spoiler
2.27.08: Watch with Kristin Kristin Dos Santos:
  • Fisher Stevens (Minkowski) said he would be returning to Hawaii to resume filming his role on Lost.
2.29.08: Honolulu Advertiser Mike Gordon:
  • Julie Carlson, the extras casting director for "Lost," is looking for people of all ages who have a Middle Eastern or Arabic appearance to take part in the new episode that begins filming March 10.
3.4.08: DarkUFO Bannerman: Casting info:
  • Ishmael Bakir. Middle Eastern, 40s, should have a slight natural accent, a high-ranking businessman who carries himself with a sense of quiet menace. We get the impression that this distinguished man has the capacity for great violence. Guest star.
  • Desk clerk. African (Tunisian), female, any age, French-speaking. Cold to some guests, but gracious to the wealthy. Must have a British or French accent. Co-star.
  • Doorman. 50s, British, white, distinguished. Uniformed doorman works for a luxury building. Co-star.
  • Bedouins. Two Arabic men, any age, must be able to speak Arabic. Stunts required - Must be able to ride a horse. Co-stars.
3.12.08: Hawaii Blog Ryan Ozawa
  • Substantial construction work was coming together in urban Honolulu for a two-day location shoot beginning March 13th. At least one scene is a Tunisian hotel. The crew has been building a dusty, rubble-strewn Middle Eastern town. Military trucks and wrecked cars stood guard in front of roadside stands selling pottery and used luggage. A large archway seemed to serve as the centerpiece of the scene. Sayid and Ben will make appearances.
3.15.08: DarkUFO Hawaii Girl
  • Sayid is one of the pallbearers at his former love, Nadia's, funeral
3.16.08: DarkUFO TimeLady More sightseeing:
  • one of the apartments on the third floor of the building in the back looks blackened and burned out
  • there's a restaurant/bar area on one side
  • the car in the center has a wooden structure around it marked with "top" and "bottom"
  • the archway just behind it had scrapes on the side of it as if the car had ploughed through it and scraped the sides.
  • there are posters of Saddam Hussein on the walls painted over with graffiti

Episode 4x10

Episode 410's title is yet unknown. Shoots: 3/20 - 4/4. It will air on May 1, 2008.

Date Source Spokesperson Spoiler
3.12.08 Watch with Kristin Kristin Dos Santos
  • Walt's Island visitations are alluded to in episode 10, but that's it for explaining the mysteries of Walt for the rest of season four.
3.16.08: DarkUFO Bannerman: Casting Call
  • Dr. Erika Stevens. Female, African-American, late-30s or older. An intelligent, caring doctor who is not adverse to putting in long work hours to help her patients. Nice Co-star - 2 scenes.
3.18.08 E! Online Kristin Dos Santos
  • Evangeline Lily has another Kate-centric episode coming up which may work out to be episode 10
3.20.08 DarkUFO TheReporter
  • There was some filming action going on at The Barracks. Sawyer, Locke and Hurley were on set. They were filming a scene with Sawyer talking to a group of kids. They were also filming a scene where one of the barrack houses was on fire, and a lot of men dressed in military uniforms and warpaint with guns stormed the barracks.

Episode 4x11

Episode 411's title is yet unknown. Shoots: 4/2 - 4/15. It will air on May 8, 2008.

Date Source Spokesperson Spoiler
3.16.08 DarkUFO Bannerman Casting calls:
  • Five-year-old boy. Caucasian, green eyes, sweet, shy, tentative and smart. Has to take a test and becomes nervous about passing. Nice Co-star.
  • Teenage boy. Plays as 16 or 17, Caucasian, green eyes. Angry, a little nerdy, defiant and rebellious. There's a lot more to this kid than meets the eye. Tries to fight back against older, stronger boys but is pushed into a locker. Nice Co-star.
  • Teenage girl. Plays as 16, Caucasian, red hair (or willing to dye hair red). Emotional, prone to dramatic gestures, passionately in love and fights with her Mom about it. Nice Co-star.

Episode 4x12

Episode 412's title is as yet unknown. It will air on May 15, 2008

Episode 4x13

Episode 413's title is yet unknown. It is the season finale (and will be split over 2 weeks the other part being either "episode 12" or a 14th hour episode 13 part 2 but which is uncomfirmed) and will air on May 22, 2008

Date Source Spokesperson Spoiler
3.3.08: TV Guide Damon Lindelof:
  • "This season ends with the Oceanic 6 getting of the Island [...] How, and what they have to sacrifice and what happens to the people that didn't leave. You get all that this year."
3.10.08: Official Podcast: The producers:
  • The two-hour finale is going to air separate hours this year.
3.10.08: Podcast The producers:
  • Ben probably knows why Widmore is looking for the island, but may not be telling the full truth. We will find out whether Ben is telling the full truth by the end of this season.
3.13.08: UGO Damon Lindelof:
  • "We are writing [the finale] as a two hour but they want to air it as two different hours because on May 22nd, which is essentially the last day of the season, they have a two hour Grey's [Anatomy] finale which going to run from 8 to 10, and that is only going to leave an hour for us. It's going to be designed as all of our finales have been, but not unlike the Lost pilot, which was written a two hours and aired as two separate hours, that is what they are going to do."


Date Source Spokesperson Spoiler
2.21.08: Doc Jensen Damon Lindelof:
  • "We definitely have to show who was in the coffin. That's the primary superstructure of the season."
2.25.08: NY Post Damon Lindelof:
  • "Season 4 is about who gets off the island and the fact that they need to get back. Season 5 is about why they need to get back, and season 6 is about what happens when they get back."
3.3.08: TV Guide The producers:
  • "Before the end of the year, you will know who's in the coffin".

Main cast

Date Source Spokesperson Spoiler
2.25.08: NY Post Damon Lindelof:
  • "We've made a choice to focus on the characters that fans have loved since the beginning - Jack, Kate, Sawyer, Locke, Sayid and Hurley."

Jack and Claire

7.26.07: Comic Con Carlton Cuse:
  • Jack and Claire will find out they are brother and sister


5-29-06: Lost Podcast The producers:
  • "We want to explore what happened to Desmond in prison; how he ended up there, and why they want him back."


7.26.07: Comic Con The producers:
3.10.08: Podcast The producers:
  • Locke is on a journey, and like all journeys it has periods of doubting, uncertainty and frustration. There is a lot more to come about what his purpose is, and we will see an energized and activated Locke even in this season. A Man of faith might doubt and have struggles, but will emerge as even a bigger believer in faith.

Recurring characters

Date Source Spokesperson Spoiler
Daniel Faraday
8.5.07: SpoilerFix
  • Faraday may end up to be a series regular.
Frank Lapidus
2.14.08: USA Today The producers:
  • "Lapidus never takes anything at face value. He is a true conspiracy nut and that's going to pay off for him."
Miles Straume
2.14.08: USA Today The producers:
  • "Miles isn't here to make friends. He's here for something else. And it ain't what he told us at the end of Episode 2. (Ben.)"
Charlotte Lewis
8.6.07: DarkUFO
  • Charlotte has a recurring arc with a possible option for series regular for next season.
Matthew Abbadon
8.13.07: DarkUFO
  • Matthew Abbadon has a high probability of even more episodes in the season.
10.17.07: Ausiello Report Michael Ausiello:
3.10.08: Podcast The producers:
  • We will see Harper again. She is an other, we did not kill her and she is still on the island.
Marvin Candle
10.25.07: Teorias Lost Francois Chau:
  • Chau was told unofficially that "Dr. Candle" will feature more prominently. If not in the 4th season, then in the next.
8.24.07: Fame & Fortune Damon Lindelof:
  • "Jacob? The answer lies further downstream in the ongoing story. Character names on the show are not assigned without a reason. And yes, that is a clue."
2.12.07: DVD Commentary The producers:
  • Ben uses the volcanic ash circle to contain Jacob. Jacob also has the means to control Ben to an extent.
2.21.08: Doc Jensen Carlton Cuse:
  • "You will definitely see more of Jacob's cabin and it was very observant that many fans noted the presence of Jack's father inside the cabin. We'll shine a little bit more light on that later this season."
5.11.07: Lost Official Podcast The producers:
  • "What happened to Annie is another chapter of Ben's story that will be seen at some point."
12.15.07: DVD Commentary The producers:
  • "Annie is an extremely important part of the island's backstory, and it is a planned chapter to come."
Mrs. Hawking
5.08.07: Damon Lindelof:
  • "You will be seeing Mrs. Hawking again."
Richard Alpert
9.21.07: ABC Lost Podcast Damon Lindelof:
  • Due to Nestor Carbonell's appearance in Cane, his story would be "parked"
2.26.08: Entertainment Weekly Damon Lindelof:
  • Now [after the strike and successive cancellation of "Cane"] Nestor Carbonell is available again.
3.12.08: Ask Ausiello Michael Ausiello:
  • Richard will appear "in at least one of this season's final five episodes."
2.20.07: Lost Official Podcast The producers:
5.05.07: Lost Official Podcast The producers:
  • We'll find out what happened to Candle's hand and Montand's arm. Probably season 4 along with Rousseau's flashbacks.
7.26.07: Comic Con The producers:
  • Rousseau will get a flashback at some point in Season 4 or Season 5 but it needs to synchronize with the rest of the story
Richard Malkin
4.30.07: Official Podcast The producers:
Horace and Olivia Goodspeed
12.12.07: DVD Commentary The producers:
  • Horace and Olivia are important to the DHARMA story, and we can expect to see more of them in the future.
1.31.07: Entertainment Weekly Carlton Cuse:
  • "There's a circularity to the way the story of Michael and Walt is going to unfold in the overall mythology, and that is a long-planned approach."
10-01-07: SciFi-Wire Damon Lindelof:
  • "We've always known Malcolm was going to grow faster than we could shoot the show. And we planned for it."
12-07-07: Sci Fi Damon Lindelof:
  • "You'll see Walt again. But you're going to have to be patient."
11.15.06: Ask Ausiello Damon Lindelof:
  • "Obviously, we have a couple more beats of Libby’s story to tell to fill in the missing pieces, and the way we would tell that story is in the flashbacks of another character. But that character can’t be a character that we already know and love, otherwise they would recognize Libby. We know who those characters are and what those story beats are, but it might be a while before we get to their flashbacks."
1.31.07: Watch with Kristin Carlton Cuse:
  • Given everything else we have to tell, Libby’s story is going to be a mystery that's going to have to get answered in season 4.
  • There's really one significant missing piece to Libby's story. How did she get from A to B — from Desmond to the mental institution? We know the answer to that question, but the only way to tell that story is through another character's flashback, and that character would have to be another character on the show who is not among the beach dwellers.
7.26.07 Comic Con The producers:
  • The theory that Libby was DHARMA is NOT "barking up the wrong tree"
9.20.07 Ausiello Report Carlton Cuse:
  • Cynthia Watros will be playing Libby again this season for multiple episodes.
Christian Shephard
3.10.08: Podcast The producers:
  • we will see Christian Shephard several more times and a good question to ponder of CS is how he is a part of the lives of Jack and the other Losties.


Date Source Spokesperson Spoiler
The four-toed statue
5.02.07: Preston & Steve Morning Show Damon and Carlton:
The Hatch
8.24.07: Fame & Fortune Damon Lindelof:
  • Clues for Season 4: "'The Hatch' imploded according to Locke but there is definitely more to this story. You will get a better picture of what happens later."
12.15.07: DVD Commentary Damon Lindelof:
  • The volcano on the island will be of "seismic importance" (pun very much intended).
1.29.08: TV Guide Jeremy Davies:
  • Faraday may be contending with a seismic metamorphosis under the surface”
Flight 815
2.21.08: Doc Jensen Carlton Cuse:
  • "We'll know by the end of the season that there will be two alternative explanations for why Oceanic 815 is in the trench at the bottom of the ocean. It will not be clear which story one should believe." Ben's list of people that need executing is linked to this wreckage.
The Smoke monster
3.10.08: Lost Official Podcast The producers:
  • We will we see the smoke monster this season. The rule with the smoke monster is that every time it is shown, its mythology is evolved a little further, so you learn something about it that you didn't know before.
The Orchid
3.10.08 Lost Official Podcast The producers:
  • The Orchid will still appear this season and is central to the story.
3.13.08: UGO Carlton Cuse:
  • "The Orchid station is definitely coming back into play. We put that film out at comic con, but we did so because it definitely ties into where we are heading this season."

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