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Lysergic Acid Diethylamide (Fringe)

"Lysergic Acid Diethylamide"
Fringe episode
Fringe lsd cartoon screenshot.jpg
Peter (left) and Walter marvel at the animated world inside Olivia's mind while talking to William Bell (right)
Episode no. Season 3
Episode 19
Directed by Joe Chappelle
Story by Jeff Pinkner
J. H. Wyman
Akiva Goldsman
Teleplay by J. H. Wyman
Jeff Pinkner
Production code 3X6119
Original air date April 15, 2011
Guest appearance(s)
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Fringe (season 3)
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"Lysergic Acid Diethylamide" is the 19th episode of the third season of the American science fiction drama television series Fringe, and the 62nd episode overall. The narrative followed the Fringe team's attempts to extract William Bell from Olivia's brain by entering her mind with the help of LSD.

The episode's teleplay was co-written by J.H. Wyman and Jeff Pinkner, while Wyman and Pinkner co-wrote the story with Akiva Goldsman. Joe Chappelle served as director. It marked the return of previous guest actor Leonard Nimoy, who had announced his retirement the previous year. Production of the animated portions was completed by Zoic Studios in an eight-week effort, the longest amount of man hours placed into a Fringe episode.

The episode first aired on April 15, 2011 in the United States on the Fox network. An estimated 3.6 million viewers tuned in, helping the episode earn a 1.4 ratings share for those 18–49, tying a series low. Critical reception was generally positive, as multiple reviewers praised the creativity of the writers.

The mind of William Bell (Leonard Nimoy) still possesses Olivia's (Anna Torv) body after several failed attempts to extract it to recently deceased corpses. Walter (John Noble) and William believe that they have less than a day before Olivia's mind will be lost. They realize that Olivia is unaware that she has been possessed by William's mind, and instead has likely locked her ego away, making it difficult to contact her by normal means. Walter comes up with a plan: he and Peter (Joshua Jackson) will enter Olivia's mind with the aid of LSD to locate her ego and help it to regain dominance in her mind, while Walter hopes to download William's mind into a computer.


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