NOTE: A lot of “foilers” have been released by legit sources like producers and crew of the show. Some of the below may not happen, so be aware…
Episode 3.18: D.O.C. (Jin/Sun-Centric Episode)
Airdate: April 25, 2007
After discovering that all of “The Others'” pregnant women died before giving birth on the island, an extremely reticent Sun allows Juliet to examine her — and uncovers the identity of the unborn child’s father. Meanwhile, Desmond allows an unlikely nemesis to help save the life of a new, mysterious island inhabitant.
Cuse and Lindelof revealed in the latest podcast: “D.O.C.” will take us back to the death-of-pregnant-women storyline.
The initials in the title of the episode stand for “date of conception.”
Edward Kitsis and Adam Horowitz reveal: Sun is going to learn interesting things about what happens to pregnant women on the island and when she does learn these things, it’s going to impact her relationship with Jin in a profound way. We will find out that Sun has a secret feat that she is hiding from Jin, and that will not only be voiced, but answered. [During the Jin and Sun flashback,] you will get a taste of them as newlyweds and kind of see where he was before he started to be Mr. Paik’s head henchmen.
Lost was filming in downtown Honolulu again, this time near Chinatown. They set up along College Walk and North Kukui St., near a Taoist temple and within view of assorted Asian architecture. It was along the river, or canal, that borders downtown. They were filming a busy street scene with background extras crossing a bridge, including a cop in a blue shirt and a white hat. Pigeons scattered on cue. The focus of the scene was Yunjin Kim, or “Sun.” She approaches a middle aged Asian woman leaning against the low wall of the canal. Sun pulls an envelope out of her bag, and hands it to the woman. The woman eagerly starts to open in, but Sun clamps it closed. They talk. Sun pushes the envelope sternly into the woman’s hands, turns, and walks away.
Guest starring are Byron Chung as Mr. Paik, Andrew Divoff as Mikhail, Marsha Thomason as Naomi, John Shin as Mr. Kwon, Alexis Rhee as older woman, Esmond Chung as Paik’s associate and Jean Chung as Paik’s secretary.
Credit: SpoilerFix.com, ABC, The Transmission, Kristin on E!Online, Lost Podcasts, Lost – The Official Magazine, Issue #10, May/June 2007
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