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Season guide

Fringe: Season 3

22 episodes Premiered Sep 23, 2010 Updated Oct 1, 2026

Fringe Season 3 continues the overarching saga across twenty-two episodes. The series is an American science fiction television series created by J. J. Abrams, Alex Kurtzman, and Roberto Orci. It premiered on Fox and stars Anna Torv, Joshua Jackson, John Noble, and Jasika Nicole. The narrative follows FBI Special Agent Olivia Dunham, brilliant but formerly institutionalized scientist Walter Bishop, and Peter Bishop a

Previously on Fringe

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ The series was created by J.J. Abrams, Alex Kurtzman, and Roberto Orci, and premiered on Fox.
  • ⚡ The main cast includes Anna Torv, Joshua Jackson, John Noble, and Jasika Nicole.
  • ⚡ The story centers on FBI Special Agent Olivia Dunham and the brilliant but formerly institutionalized scientist Walter Bishop.
  • ⚡ The series explores science fiction, drama, and mystery elements as part of its overarching saga.
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Season overview

Fringe Season 3 continues the overarching saga across twenty-two episodes. The series is an American science fiction television series created by J. J. Abrams, Alex Kurtzman, and Roberto Orci. It premiered on Fox and stars Anna Torv, Joshua Jackson, John Noble, and Jasika Nicole. The narrative follows FBI Special Agent Olivia Dunham, brilliant but formerly institutionalized scientist Walter Bishop, and Peter Bishop as they investigate strange occurrences and anomalies tied to a parallel universe and fringe science. The overarching saga explores complex mysteries, alternate realities, and the consequences of interdimensional conflict, maintaining the signature blend of science fiction, drama, and mystery established in earlier seasons across its twenty-two episode run.

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

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Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

14%
86%
Mytharc (3): Crucial lore & season climaxes
Core (19): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Olivia

Sep 23, 2010 · 44 min

After the extraordinary turn of events that shockingly left an imprisoned Olivia "over there," she fights to find her way home. Meanwhile, Peter and Walter try to move on with thei

S3·E2 Core

The Box

Sep 30, 2010 · 44 min

The story alternates to the Fringe Team "over here" where they investigate a mystifying case that people are discovered in a trance-like state that ultimately leads to their death.

S3·E3 Core

The Plateau

Oct 7, 2010 · 44 min

In this case, timing is everything as a series of anomalous events lead the Fringe Division to investigate deadly incidents with unimaginable coincidences. As the freaky crimes con

S3·E4 Core

Do Shapeshifters Dream of Electric Sheep?

Oct 14, 2010 · 44 min

Newton, concerned about the consequences of a distressing development involving a high-ranking official, is forced to call to action a sleeping shapeshifter. As Walter and the rest

S3·E5 Core

Amber 31422

Nov 4, 2010 · 44 min

The alternate universe Fringe Division investigates a shocking breach of security when a twin frees his brother from a quarantined Amber area. As the team sets out to crack this so

S3·E6 Core

6955 kHz

Nov 11, 2010 · 44 min

Back “over here,” the Fringe Division investigates a bizarre phenomenon when 15 people up and down the Eastern Seaboard, all suffer retrograde amnesia from listening to their short

S3·E7 Core

The Abducted

Nov 18, 2010 · 44 min

When a serial kidnapper “over there” strikes again, the emotional and familiar case hits home for Colonel Broyles, sending a determined Olivia to uncover additional details about t

S3·E8 Core

Entrada

Dec 2, 2010 · 44 min

Peter struggles to cope with recent events; Olivia searches for an ally; a device that communicates between universes is discovered...

S3·E9 Core

Marionette

Dec 9, 2010 · 44 min

When the Fringe Team investigates a case where a victim had his heart extracted, it’s just the beginning of a series of mysterious and reanimating events tied together. Meanwhile,

S3·E10 Core

The Firefly

Jan 21, 2011 · 44 min

An Observer makes contact with the Fringe Team to help rectify a mistake. Meanwhile, Walter befriends Roscoe Joyce, keyboardist for Walter's favorite 1970s band, "Violet Sedan Chai

S3·E11 Core

Reciprocity

Jan 28, 2011 · 43 min

When the Fringe Team visits Massive Dynamic’s assembly of the doomsday device, Walter becomes greatly concerned for Peter’s well-being, so he turns to Nina for added brain power to

S3·E12 Core

Concentrate and Ask Again

Feb 4, 2011 · 44 min

When a scientist falls dead after ingesting a lethal cloud of blue powder and his bones disintegrate in his body, the CDC suspects a biological attack. As the Fringe Team investiga

S3·E13 Core

Immortality

Feb 11, 2011 · 44 min

As the story shifts back to life “over there,” the absence of Colonel Broyles changes the dynamic of the Fringe Team as they investigate a bioterrorist armed with an insect that ha

S3·E14 Core

6B

Feb 18, 2011 · 44 min

A series of Fringe events leads the team to the home of a woman grieving over the death of her husband, while Peter and Olivia make an effort to repair the emotional rift between t

S3·E15 Core

Subject 13

Feb 25, 2011 · 44 min

In a follow up to last season’s “Peter” flashback episode, the all-new “Six Months Later” episode revisits a poignant period of time for both the Bishops and Olivia.

S3·E16 Core

Os

Mar 11, 2011 · 44 min

The Fringe Team investigates a group of thieves who can break the laws of gravity. Meanwhile, Walter attempts to delay the damage he's caused to the fabric of the universe.

S3·E17 Core

Stowaway

Mar 18, 2011 · 44 min

When the Fringe team investigates an apparent suicide victim, they uncover a second set of fingerprints leading them to a woman with uncanny characteristics that cannot die.

S3·E18 Core

Bloodline

Mar 25, 2011 · 43 min

The intensity of life “over there” accelerates as Olivia finds herself in mortal danger.

S3·E19 Core

Lysergic Acid Diethylamide

Apr 15, 2011 · 44 min

In an effort to remove Bell's consciousness from Olivia's mind, Peter, Bell, and Walter enter Olivia's subconscious and attempt to find her personality, which has hidden itself som

S3·E20 Core

6:02 AM EST

Apr 22, 2011 · 43 min

The beginning of the end is triggered when Walternate finds a way to wreak havoc “over here."

S3·E21 Mytharc

The Last Sam Weiss

Apr 29, 2011 · 44 min

As devastation spreads on This Side, Walter, Olivia, and Sam Weiss struggle to find a way to stop the destruction and discover that one individual has the ability to allow Peter ac

S3·E22 Mytharc

The Day We Died

May 6, 2011 · 44 min

As the thrilling third season propels to a climactic close, questions will be answered as Peter confronts his destiny and a beloved team member meets an untimely demise.

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