"Olivia" is the first episode of the third season of the American science fiction television series Fringe. The episode was co-written by J. H. Wyman and Jeff Pinkner, and was directed by Joe Chappelle. The third season spent its time alternating between the prime and parallel universes, and "Olivia" was placed in the latter. This is indicated in the introduction of the episode, with the same red screen used in the last season's finale, "Over There". "Olivia" follows the cliffhanger left by the second season, in which Olivia Dunham is trapped in the parallel universe. The episode explores the consequences of Olivia's abduction by Walternate, and her attempt to go back to the prime universe.