Lost: One of Us

"One of Us" is the 16th episode of the third season of Lost. It aired on April 11, 2007, making it the 65th episode of the series. The episode was written by Carlton Cuse and Drew Goddard and directed by Jack Bender. The title of the episode is not only a reference to the season two episode titled "One of Them", it is also a major theme of the episode, as Jack tries to convince the other flight survivors that Juliet is "one of us", rather than an Other. The character of Dr. Juliet Burke (Elizabeth Mitchell) is featured in the episode's flashbacks, which reveal how Juliet got on the Island and why she went to the island in the first place. While on the island, Jack Shephard (Matthew Fox), Kate Austen (Evangeline Lilly), Sayid Jarrah (Naveen Andrews) and Juliet trek back to the beach camp, and Claire Littleton (Emilie de Ravin) is struck by a mysterious illness. Andrew Divoff, William Mapother and Nestor Carbonell again reprise their recurring roles as Others; Mikhail Bakunin, Ethan Rom and Richard Alpert. The Island events in this episode take place between December 13 and December 15, 2004.