A Better Human Being: As the team investigates a mentally ill patient who seems to be linked to a series of murders, frightening clues lead Olivia to a shocking conclusion. (S4, ep 13) [S]
Forced Perspective: Olivia copes with an ominous warning from the Observers as Peter and the team track a girl with the ability to predict death. (S4, ep 10) [S]
Enemy of My Enemy: Peter reaches an uneasy alliance with the Other Side's Fringe Division after they capture the mastermind behind the Shapeshifters. (S4, ep 9) [S]
Back to Where You've Never Been: Peter convinces Olivia and Lincoln to take him to the parallel universe so that he can ask Walternate to return him to his timeline. (S4, ep 8) [S]
And Those We've Left Behind: The team searches for a pattern in tragic time-loop anomalies. An engineer, his wife and a professor become involved with the investigation. (S4, ep 6) [S]
Alone in the World: The team investigates when the bodies of two 12-year-olds are found in an advanced state of decomposition just hours after bullying another boy. (S4, ep 3) [S]
One Night in October: When a serial killer 'Over There' starts freezing victims from the inside out, the 'Over Here' team gets involved with the investigation. (S4, ep 2) [S]
Neither Here nor There: Just one week after Peter Bishop saved the day, the truce between the two worlds remains intact. Lincoln Lee joins the team on a case he has ties to. (S4, ep 1) [S]
Lysergic Acid Diethylamide: The team desperately tries to remove William Bell's consciousness from Olivia's body before she disappears forever. (S3, ep 19) [S]
Os: The team investigates a group of thieves who can break the laws of gravity, and Walter becomes obsessed with retrieving William Bell's consciousness from beyond the grave. (S3, ep 16) [S]
6B: A series of Fringe events leads the team to the home of a grieving widow, and Peter and Olivia try to repair the emotional rift between them. (S3, ep 14) [S]
Immortality: A terrorist arms himself with an insect that enjoys munching on human flesh. Walternate discovers there are lines he won't cross. (S3, ep 13) [S]
Concentrate and Ask Again: When a scientist is killed by a blue dust that grinds his bones up, the Fringe Division investigates the case and suspects a biological attack. (S3, ep 12) [S]
Reciprocity: The Fringe Division visits the Massive Dynamic to see the Doomsday Machine, and the presence of Peter assembles the device. (S3, ep 11) [S]
Marionette: The Fringe Division must hunt down a man who has been harvesting transplanted organs, leaving victims with nearly nullified decay rates. (S3, ep 9) [S]
Entrada: Peter grapples with the aftermath of recent events, Olivia desperately searches for an ally and the Fringe Team discovers a device that communicates between universes. (S3, ep 8) [S]
The Abducted...: When a serial kidnapper known as the 'Candyman' strikes again in the parallel universe, the emotional and familiar case hits home for Colonel Broyles. (S3, ep 7) [S]
6955 Khz: The team are called in when 15 people along the Eastern seaboard suffer retrograde amnesia after listening to their shortwave radios on the same frequency. (S3, ep 6)
Amber 31422: In the parallel universe, a twin frees his brother from a quarantined Amber area, and the team sets out to crack this sophisticated case. (S3, ep 5) [S]
Do Shapeshifters Dream Of Electric Sheep?: An American Senator is shot after a car accident, and Walter finds himself in danger during an investigation at Massive Dynamic. (S3, ep 4) [S]
The Plateau: In the parallel universe, Olivia and the Fringe Division encounter Milo Stanfield, a man who underwent treatment for autism and developed some incredible abilities. (S1, ep 3) [S]
The Box: When people are discovered in a trancelike state, the team are called in to investigate. Meanwhile, Walter meets with Nina at Massive Dynamic. (S3, ep 2)
Over There: Part 2: Olivia travels to the parallel universe with Walter, who encounters William Bell. Sacrifices are made, and both universes may be changed forever. (S2, ep 22) [S]
Over There: Part 1: Olivia travels to the parallel universe with Walter, who encounters William Bell. Sacrifices are made, and both universes may be changed forever. (S2, ep 21) [S]
Northwest Passage: Peter teams up with Sheriff Mathis on a mysterious murder case, Walter faces being sent back to St. Claire's and someone from the 'other side' visits. (S2, ep 20) [S]
Olivia. In the Lab. With the Revolver: A perfectly healthy woman inexplicably dies, and Olivia tries to keep Walter's secret from Peter. (S2, ep 16) [S]
Jacksonville: When a Manhattan office building is rattled to its core, leaving only one survivor, the Fringe Team examine the man's otherworldly origins. (S2, ep 14) [S]
The Bishop Revival: When a group of guests at a wedding suffocate from the inside out, the Fringe team investigate how the toxin was delivered and targeted. (S2, ep 13)
What Lies Below: Peter and Olivia become susceptible to a life-threatening virus when investigating the death of a man whose veins erupt and explode. (S2, ep 12) [S]
Johari Window: Following an unexplained attack involving disfigured humans, the Fringe team visits Edina City in New York to uncover leads surrounding the bizarre case. (S2, ep 11) [S]
Grey Matters: A Fringe investigation is triggered when a patient at a mental institution undergoes an impromptu brain surgery that unexpectedly leaves his brain exposed. (S2, ep 10) [S]
Of Human Action: When a kidnapping rapidly escalates into a hostage situation in New York, local authorities discover a mysterious force with mind-blowing consequences. (S2, ep 7) [S]
Dream Logic: People who had their sleeping problems cured by a biochip which is inserted into the brain suddenly start dying, and Walter suspects mind control is at work. (S2, ep 5) [S]