Season 4
22 episodes · Sep 23, 2011
The fourth season of the American science fiction television series Fringe premiered on Fox on September 23, 2011 and concluded on May 11, 2012, consisting of 22 episodes. The series is produced by Bad Robot Productions in association with Warner Bros. Television. The show was officially renewed for a fourth season on March 24, 2011.
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S4E1Neither Here Nor There
Sep 23, 201144mJust one week after Peter Bishop saved the day and was then wiped from existence, the truce between the two worlds remains intact and the two sides are forced to work together. Lincoln Lee joins the Fringe team as they investigate a shapeshifter case that is very personal to him.
S4E2One Night in October
Sep 30, 201143mAs the victims of a highly intelligent serial killer "Over There" stack up, the Fringe Division "Over Here" is asked to assist. As the two sides tangle and innocent people remain at risk, the suspect's doppelganger "Over Here," a professor who teaches Forensic Psychology, is brought into the fold and forces the team to consider the notion of sending civilians to the other side
S4E3Alone in the World
Oct 7, 201144mTwo young bullies are found dead and in just a few hours they rot to an advanced state of decomposition. The Fringe team investigates and uncovers an amorphous figure claiming more victims. Walter becomes increasingly distracted with his mental state.
S4E4Subject 9
Oct 14, 201144mOlivia uncovers a dangerous force that may be connected to past experiments with Cortexiphan. The investigation forces Walter to leave the lab for the first time in years and travel to Massive Dynamic to examine old case files. Walter struggles with his emotional state as he confronts the demons of his past.
S4E5Novation
Nov 4, 201143mOlivia and the others of Fringe division attempt to determine the origin of Peter Bishop, who purports himself as Walter's son who had died as a young boy in the original time line.
S4E6And Those We've Left Behind
Nov 11, 201144mThe Fringe team must find the pattern between tragic time loop anomalies. As the investigation unfolds, Raymond, an electrical engineer, and his wife Kate, a professor of theoretical physics, enter the picture.
S4E7Wallflower
Nov 18, 201144mWhen a man mysteriously dies by an invisible force, his body rapidly begins turning ghostly white. The Fringe team learns that this is not an isolated incident, and there’s evidence that links the predator to someone who passed away with an unknown genetic disorder. Meanwhile, Olivia suffers from migraines.
S4E8Back to Where You've Never Been
Jan 13, 201244mIn an effort to find a way home, Peter journeys to the Other Side to confront Walternate. However, his venture proves more dangerous than expected. Meanwhile, Olivia receives a dire premonition from an Observer.
S4E9Enemy of My Enemy
Jan 20, 201244mPeter's visit to the other side intensifies as the alternate FRINGE division faces off against a formidable new foe in a harrowing race against time.
S4E10Forced Perspective
Jan 27, 201244mOlivia continues to cope with the ominous warning from the Observers, while Peter and the team track a girl with the mysterious ability to predict death.
S4E11Making Angels
Feb 3, 201244mOver Here Astrid gets an unexpected visit from her Alternate, while Peter and Olivia track a killer using a toxin that has yet to be invented. Both universes collide in a case that pushes the boundaries of what is possible.
S4E12Welcome to Westfield
Feb 10, 201244mPeter, Olivia and Walter come face to face with a mysterious and terrifying Fringe event as they get trapped in a town that there’s no escaping from.
S4E13A Better Human Being
Feb 17, 201244mAs the Fringe team investigates a mentally ill patient who appears to be connected to a series of murders, frightening clues and connections are uncovered that lead Olivia to some shocking revelations.
S4E14The End of All Things
Feb 24, 201244mThe dying Observer comes to see Walter and Peter, who must take extreme measures to learn what secrets he hides and determine if he knows where Olivia is. Meanwhile, David Robert Jones tries to force Olivia to use her cortexiphan abilities by torturing Nina.
S4E15A Short Story About Love
Mar 23, 201244mFollowing the recent shocking revelations and emotional events, Peter weighs his options as the Fringe team investigates a killer targeting love.
S4E16Nothing As It Seems
Mar 30, 201244mThe Fringe team faces a case that appears familiar to Peter. Strangely, it takes place in this timeline.
S4E17Everything in Its Right Place
Apr 6, 201244mLincoln travels to the other side to join forces with Fauxlivia and his own alternate, as they search for a vigilante with a surprising connection to the shapeshifters.
S4E18The Consultant
Apr 13, 201243mWalter travels to the Alternate Universe to assist in the investigation of a Fringe event with ties to both worlds. Meanwhile, David Robert Jones reveals his next target.
S4E19Letters of Transit
Apr 20, 201244mThe Fringe team goes back to the future as the story jumps ahead to 2036, when the Observers and the Fringe team engage in a game-changing battle.
S4E20Worlds Apart
Apr 27, 201244mThe teams on both sides fight on for a common cause, and there are shocking developments tied to the Cortexiphan children.
S4E21Brave New World (1)
May 3, 201243mWalter is forced to revisit his painful past when a fringe event causes people to spontaneously combust; the team faces off with David Robert Jones.
S4E22Brave New World (2)
May 11, 201244mThe Fringe team is pushed to the breaking point as they desperately attempt to prevent a catastrophic event that threatens the lives of everyone.