The characters on LOST have many secrets they keep from each other. This page serves to keep track of as many secrets as possible, including who knows what.
Kate is a fugitive
- Kate killed her biological father, thus starting her life on the run
- She was finally captured by a U.S. Marshal in Australia
Sun speaks English
- Sun learns English prior to boarding Flight 815 as part of her plan to leave Jin.
- When the plane crashes, no one knows (not even Jin) that Sun can speak English. Because of the language barrier, the Korean couple is kept out of the loop.
- Sun reveals her secret first to Michael, to explain that Jin assaulted him for stealing Jin's watch.
- Kate discovers Sun's secret based on her reactions to Kate's words while they are gardening.
- Everyone finally learns about her ability to speak english when she defends Jin against accusations that he burned the first raft.
Sun poisoned Michael
- In Born to Run, Michael gets sick and Jack determines that someone poisoned his water bottle.
- Kate and Sawyer are early suspects.
- Jack confronts Sun, who confesses she didn't want Jin to leave, and "only used enough to make him [sick]." Michael inadvertantly drank from Jin's water.
- Jack tells Sun that he won't tell anyone.
- Later in the episode we find out that Kate suggested the poisoning; only Sun knows this fact.
Locke was paralyzed
- Locke was in a wheelchair for four years before the crash, but since he was pre-boarded prior to anyone else getting on the plane, no one knew of his disability.
- After the crash, Locke found himself able to walk.
- Walt says to Michael "Mr. Locke said a miracle happened to him." How much Locke elaborated on this fact to Walt is unknown.
- Upon approaching the drug smugglers plane for the first time, Locke's legs start to revert to their paralyzed state.
- Locke reveals his secret to Boone just before he is injured exploring the drug smugglers plane.
Locke and Boone knew about the Hatch
- They discover The Hatch and try to open it, but don't tell anyone.
- Boone tells Jack about it as he is dying.
- Sayid convinces Locke to take him to The Hatch.
The Hieroglyphics
- Only Locke has seen the Hieroglyphics on the Countdown Timer.
Hurley is a multi-millionaire
- Wins the Mega Millions Lotto by playing the Numbers he got from Leonard.
- Owes Walt a large sum of money he bet playing Backgammon. He assures Walt, "you'll get it."
- Tells Charlie his net worth, but Charlie doesn't believe him.
- Tells his story on separate occaisions to Rousseau and Jack
- Sawyer reads the message Hurley wrote for the Bottle, but doesn't recognize Hurley's real name. ("Who the hell is Hugo and how's he got a 160 million dollars to leave to his mom?")
- After winning the lotto, Hurley appeared on a Korean TV station, seen during the episode ...In Translation
Hurley was in a psychiatric hospital
- Most of the details surrounding Hurley's stay in the psych ward, including the reason he was admitted, are unknown
- During his stay, he learned the numbers from a fellow patient, Leonard
- Tells Jack of his psych ward stay in Man of Science, Man of Faith
- It's possible that Hurley met Libby in the psych ward, since he seems to recognize her from before their time on the island
Charlie "kidnapped" Sun
- As part of Sawyer's plan in The Long Con, Charlie attacks Sun, making it look like the Others are becoming more aggressive.
Charlie is a heroin addict
- Now known by at least Jack, Locke, Hurley, Claire, Sawyer, and Mr. Eko. It's not clear if his addiction is generally known.
The Black Smoke
- We only know for a fact that Mr. Eko has stared into the black smoke as Charlie watched from above.
- It is inferred that Locke has seen the black smoke as well.
- The black smoke was seen by Kate, Jack, Locke, and the others that went to the Black Rock with Danielle as Locke is pulled into the hole.
Walt set fire to the first raft
- Locke figured out Walt's actions and confronted him. Walt would go on to confess to Michael.