A New Day in the Old Town
Olivia returns to William Bell's intriguing parallel universe, while Peter, unknowingly in a race against time, pursues information about her visit.
Night of Desirable Objects
As the circumstances surrounding Olivia intensify, the Fringe team investigates a perplexing case involving genetic mutation. A construction worker in rural Pennsylvania goes missing when he's pulled into an underground tunnel filled with human remains.
Fracture
Unexplained bombs put innocent lives on the line and the FBI's Fringe Team in a race against time to defuse the mysterious threat.
Momentum Deferred
Recuperating from her alternate reality meeting with William Bell, Olivia consumes a potent "fringe" concoction that Walter prescribes to stimulate her memory.
Dream Logic
As the Fringe team tirelessly explores a mysterious incident involving a man whose strange, creepy dreams project nightmarish events, Agent Broyles has a meeting with Nina Sharp.
Earthling
A shadowy case casts light on Agent Broyles' past and leads the team to the possibility of foreign Fringe Science -- as alarming events mount and details emerge about Broyles.
Of Human Action
A disconcerting kidnapping rapidly escalates into a hostage situation in New York, as the Fringe Division discovers a mysterious force with mind-blowing consequences.
August
There's more than one Observer! When a mysterious Observer kidnaps a woman, the Fringe team is called in to investigate why -- putting Walter's clandestine involvement with them years before at risk of discovery.
Snakehead
After a cargo ship runs aground, the shoreline becomes littered with bodies hosting a giant squid-like creature. The Fringe team descends upon the scene to examine the bodies and discover that the mysterious organisms are giant parasites.
Grey Matters
A Fringe investigation is triggered when a patient at a mental institution undergoes an impromptu brain surgery that exposes his brain. Despite the circumstances, the patient's condition and sanity miraculously improve before the Fringe team arrives.
Johari Window
Following an unexplained attack, the Fringe team visits a small town where a population of disfigured humans has hidden away -- and they'll do anything to keep it that way.
What Lies Below
Investigating a lethal virus, Peter and Olivia become isolated inside a quarantined building and face life-threatening circumstances -- sending Walter, Broyles and Astrid on a frantic search for a solution to save them.
The Bishop Revival
While investigating a lethal toxin that was unleashed on a wedding ceremony as a weaponized experiment, Walter uncovers an alarming formula revealing a link to the Bishop family tree.
Jacksonville
When a violent tremor shakes a Manhattan office building, and a sole survivor is found, Walter surmises its cause was rooted in his research with William Bell many years ago. With another catastrophe imminent, the team races to Jacksonville.
Peter
While explaining Peter's otherworldly origins to Olivia, Walter flashes back to 1985, and the mystery springs forward by revealing the past. Details of the neighboring world reaffirm that there is, in fact, more than one of everything.
Olivia. In the Lab. With the Revolver.
When a healthy woman is found dead from a disease she never had, the Fringe team investigates the origin of this inexplicably fatal condition before it claims more lives.
White Tulip
When passengers aboard a commuter train appear to have died a still death, it seems that a switch was flipped -- because all cell phones, MP3 players, laptops, batteries and human bodies have been drained of power.
The Man From the Other Side
Thomas Jerome Newton is back -- and so is evidence of the alternate world's shapeshifters. Peter reveals a family secret while Walter struggles to discern Newton's motives.
Brown Betty
While Walter deals with some very upsetting news, he tells Olivia's niece Ella a fairy tale that includes unexpected musical performances by Olivia and Agent Broyles.
Northwest Passage
Peter teams up with a local law enforcement official on a serial murder investigation with ties to Newton. Someone from the "other side" pays a visit.
Over There: Part One
Walter and Olivia travel to the parallel universe, and the anticipated face-off between Walter Bishop and William Bell finally occurs.
Over There: Part Two
Sacrifices will be made, and both universes may never be the same again after Walter and Olivia visit the "other side."
Olivia
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.
The Box
A highly intelligent serial killer "over there" forces the two Fringe teams to work together as the killer's doppelganger "over here" is brought into the fold to help.
The Plateau
The Fringe team investigates a mysterious case of murder and rapid decomposition, uncovering an amorphous figure claiming more victims. Walter's distracted by hallucinations.
Do Shapeshifters Dream of Electric Sheep?
When Olivia discovers a dangerous force connected to Walter's past, she forces him to leave the lab for the first time in years and come face-to-face with the demons of his past.
Amber 31422
In the aftermath of recent shocking events, things really escalate when the translucent shapeshifters return. As the threat grows, a former Massive Dynamic scientist joins the team.
6955 KHZ
A pair of married scientists help the Fringe team uncover a pattern in deadly time loop anomalies.
The Abducted
Investigating a man's death by an invisible force, the Fringe team discovers a serial pattern and evidence that links the predator to someone dead of an unknown genetic disorder.
Entrada
Trying to find a way home, Peter confronts Walternate on the Other Side -- which proves more dangerous than expected. Meanwhile, Olivia receives a dire warning from an Observer.
Marionette
The alternate Fringe division faces new challenges. When a victim has his heart extracted, it’s just the beginning of a series of mysterious reanimation events. Meanwhile, Peter comes to terms with his relationship with Olivia.
The Firefly
The team tracks a mysterious girl who can predict death.
Reciprocity
The Fringe team becomes trapped in a strange town. Walter becomes concerned for Peter’s well-being -- so he turns to Nina for help.
Concentrate and Ask Again
Astrid gets an unexpected visit from her alternate self while Peter and Olivia track a killer using a toxin that has yet to be invented.
Immortality
Investigating a mentally ill patient connected to a series of murders, Olivia uncovers some frightening connections and shocking revelations.
6 B
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 try to repair the emotional rift between them.
Subject 13
The Fringe team tracks a killer targeting love; the team revisits the past.
OS
The Fringe Team's investigating a group of thieves capable of breaking the laws of gravity, and the case is a familiar one for Peter.
Stowaway
Lincoln works a suicide case "over there" with the Alt Fringe team, discovering a trail leading to a woman that cannot die.
Bloodline
The intensity of life “over there” accelerates as Olivia finds herself in mortal danger. Walter travels to the Alternate Universe to help Broyles.
Lysergic Acid Diethylamide
In this mind-bending episode, the story jumps ahead to 2036 when the Fringe team strikes back against the Observers in a game-changing battle. The team makes a desperate, experimental attempt to remove William Bell’s consciousness from Olivia’s body.
6:02 AM EST
The beginning of the end is triggered when Walternate finds a way to wreak havoc "over here," -- putting both universes in jeopardy.
The Last Sam Weiss
A case of spontaneous combustion forces Walter to revisit his painful past, while the Fringe team faces off against David Robert Jones to save the world -- or worlds.
The Day We Died
The Fringe team is pushed to their breaking point as they desperately attempt to prevent a catastrophic event threatening the lives of everyone.
Neither Here nor There
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.
One Night in October
A highly intelligent serial killer "over there" forces the two Fringe teams to work together as the killer's doppelganger "over here" is brought into the fold to help.
Alone in the World
The Fringe team investigates a mysterious case of murder and rapid decomposition, uncovering an amorphous figure claiming more victims. Walter's distracted by hallucinations.
Subject 9
When Olivia discovers a dangerous force connected to Walter's past, she forces him to leave the lab for the first time in years and come face-to-face with the demons of his past.
Novation
In the aftermath of recent events, things really escalate when the translucent shapeshifters return. As the threat grows, a former Massive Dynamic scientist joins the Fringe team.
And Those We've Left Behind
A pair of married scientists help the Fringe team uncover a pattern within deadly time loop anomalies.
Wallflower
Investigating a man's death by an invisible force, the Fringe team discovers a serial pattern and evidence that links the predator to someone dead of an unknown genetic disorder.
Back to Where You've Never Been
Trying to find a way home, Peter confronts Walternate on the Other Side -- which proves more dangerous than expected. Meanwhile, Olivia receives a dire warning from an Observer.
Enemy of My Enemy
Peter’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.
Forced Perspective
Olivia continues to cope with the ominous warning from the Observers, while Peter and the team track a girl with the mysterious ability to see the future and predict death.
Making Angels
Our 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.
Welcome to Westfield
Peter, Olivia and Walter come face-to-face with a mysterious and terrifying Fringe event as they become trapped in a town there’s no escaping from.
A Better Human Being
As 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.
The End of All Things
Peter and the Fringe team take extraordinary measures in an attempt to stop pivotal, life-threatening events from unfolding.
A Short Story About Love
Following the recent shocking revelations and emotional events, Peter weighs his options as the Fringe team investigates a killer targeting love.
Nothing as It Seems
The Fringe team faces a case that appears familiar to Peter.
Everything in Its Place
Lincoln travels to the other side to join forces with Bolivia and his own alternate, as they search for a vigilante with a surprising connection to the shapeshifters.
The Consultant
Walter 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.
Letters of Transit
The Fringe tradition of a mind-bending 19th episode continues as the Fringe team goes back to the future. Jumping ahead to 2036, the Fringe team and the Observers engage in a game-changing battle.
Worlds Apart
The Fringe teams on both sides fight for a common cause as the Cortexiphan children surface with some shocking new developments.
Brave New World: Part 1
A mysterious Fringe event causing spontaneous human combustion forces Walter to revisit his painful past. Meanwhile, the Fringe team faces off against David Robert Jones to save the world -- or worlds.
Brave New World: Part 2
In the climactic conclusion of the two-part episode, the Fringe team is pushed to their breaking point as they desperately attempt to prevent a catastrophic event that threatens the lives of everyone.
Transilience Thought Unifier Model-11
In the fifth and final season premiere, Peter and his daughter Etta (GEORGINA HAIG) set out to find out what happened to Olivia.
In Absentia
The Fringe team revisits Walter's Harvard lab -- now under Observer control -- to locate information they need to fight on in their mission to save the world.
The Recordist
As the Fringe team continues to fight the Observers, unforeseen events lead them to a forest where they encounter a strange subculture of people devoted to recording human history.
The Bullet That Saved the World
When the Fringe Team tracks a lead into a hostile and heavily guarded location, Phillip Broyles (series star LANCE REDDICK) resurfaces ... but can he be trusted?
An Origin Story
The Fringe Team goes on the offensive.
Through the Looking Glass and What Walter Found There
A key piece needed to defeat the Observers is uncovered.
Five-Twenty-Ten
The Fringe Team orchestrates a Fringe event of their own.
The Human Kind
While Olivia encounters an intuitive oracle-like person (guest star JILL SCOTT) on a mission for Walter, Peter finds himself in a perilous situation as he observes Windmark.
Black Blotter
Trying to recall his plan, Walter takes an LSD trip down memory lane. Meanwhile, Peter and Olivia trace a mysterious signal into the woods, where they come upon a grisly scene.
Anomaly XB-6783746
As Peter, Olivia, Astrid and Walter scramble to tap into a key piece of the puzzle to defeat the Observers, they enlist the aid of Nina Sharp who conjures up a plan.
The Boy Must Live
Walter enters the lab's deprivation tank to uncover information about the mysterious Donald, while Windmark sets out on a revealing mission of his own.
Liberty
The thrilling worlds of Fringe near the end in the first part of a two-hour series finale as Olivia embarks on a dangerous and otherworldly journey into the unknown.
An Enemy of Fate
The thrilling worlds of Fringe come to a mind-blowing end in the 100th episode and two-hour series finale as the team faces off against the Observers in one final battle.