Season 2 | Episode 15 | Aired 03/1/06
What happened to Claire when she was abducted by the Others?
When Rousseau shows up at camp and tells Claire that her baby could be 'infected', Claire sets out on a journey to find the answer to this question. Armed with memory "flashes" triggered first by Rousseau's presence and then through Libby's relaxation exercises, Claire remembers that she was in fact being held somewhere on the island and given vaccine for the baby. Convinced that the only way to cure Aaron is to find the vaccine, she enlists the help of Rousseau and Kate to find this mysterious place where she was being kept while the Others had her.
With Kate and Rousseau as her guides, Claire slowly pieces together this missing time in her life to discover something unthinkable but in the end, the most important information she uncovers is that she was meant to be a mother.
Meanwhile, Jack and Locke continue to try and keep Henry a secret from the camp, but it's becoming increasingly difficult. When Mr. Eko ventures down into the hatch to borrow some tools, he figures out that they are keeping a man inside the armory and tells Jack he wants to speak with the prisoner. While Henry maintains that he is not an Other, Eko treats him as such and confesses to killing two of his friends.
Jack and Locke continue to butt heads about how to handle the situation, further straining the power balance between our two heroes. And when Henry uses this information to try and get inside Locke's head, John Locke's composure snaps for the first time, giving way to his complete frustration at being trapped by his responsibilites to the hatch.