Original air date: 09/17/2009 Runtime: 43:44 min. Season Two opens with Olivia’s shocking return to this perplexing alternate reality, while Peter, unknowingly in a race against time with an ominous mobile force, pursues information about Olivia’s visit. Walter reenters the lab to cook up a bit of fringe science – and of course, some custard for Peter’s birthday!
Original air date: 09/24/2009 Runtime: 43:46 min. As the circumstances surrounding Olivia intensify, the Fringe team investigates a perplexing case involving genetic mutation. A highway construction worker in rural Pennsylvania goes missing when he is mysteriously drawn into an underground tunnel filled with human remains. Meanwhile, back in the lab, Walter is attempting to simulate travel between realities on frogs. When it’s discovered that the disappearance in Pennsylvania is not an isolated incident, the Fringe team travels to the crime scene to unearth evidence.
Original air date: 10/01/2009 Runtime: 43:45 min. Peter, Walter, Olivia and Broyles pursue a strange and deadly occurrence in Philadelphia where a bomb blew up inside a train station but left no trace of any explosive device. The perplexing and unexplained set of circumstances returns Walter to the lab to closely examine the human remains where he uncovers an unlikely energy source that triggered the explosion. With the explosive threat of more bombs and links to a classified military project, the intense investigation leads Olivia and Peter to Iraq.
Original air date: 10/08/2009 Runtime: 43:45 min. Recuperating from the traumatic and alarming meeting with Massive Dynamic founder William Bell (guest star LEONARD NIMOY), Olivia consumes a powerful “fringe” concoction that Dr. Bishop prescribes to stimulate her memory. Meanwhile, the Fringe Division investigates a series of robbery cases that are tied to shape-shifting. As clues are tracked and memories are jogged, another woman experimented on by Dr. Bishop is introduced and a flashback reveals more about Olivia’s visit to the alternate reality.
Original air date: 10/15/2009 Runtime: 43:46 min. The Fringe team travels cross-country to Seattle after learning of a mysterious incident involving a man who attacked his boss because he believed he was an evil ram-horned creature. As these puzzling occurrences continue, the team tirelessly explores strange and creepy links to dreams. In pursuit of additional information, Agent Broyles has a disconcerting meeting with enigmatic Massive Dynamic executive Nina Sharp that leads the investigation in an unthinkable direction.
Original air date: 11/05/2009 Runtime: 43:46 min. The Fringe Division is flummoxed by dark circumstances and new light is shed on Agent Broyles as the Fringe team takes on a puzzling investigation where victims are inexplicably disintegrating into ash. The shadowy case casts light on Special Agent Phillip Broyles’ past and leads the team to the possibility of a foreign Fringe Science. Emotions run high as the alarming events stack up and revealing personal details emerge about the leader of the Fringe Division.
Original air date: 11/12/2009 Runtime: 43:45 min. When a kidnapping rapidly escalates into a hostage situation in New York, local authorities close in on the suspects only to discover a mysterious force with mind-blowing consequences. As the investigation intensifies, the mystery and threats deepen to unimaginable proportions when the Fringe Division discovers a link between the kidnapping and Massive Dynamic.
Original air date: 11/19/2009 Runtime: 43:45 min. There's more than one Observer! When one of the series mysterious Observers kidnaps a woman, the Fringe team is called in to investigate why. But while the course of their investigation not only reveals the private lives of the Observers, it also threatens to unearth Walter's clandestine involvement with them years before a secret he's desperate to keep from his son, Peter. As destiny is irrevocably rewritten and time is running out, the renegade Observer asks for help from the unlikeliest of sources Walter Bishop.
Original air date: 12/03/2009 Runtime: 43:25 min. 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 discovers that the mysterious organisms are actually giant parasites. As the investigation unfolds, Walter heads back to the lab while Olivia, Peter and Broyles race against time when they realize the case has ties to a threatening organization.
Original air date: 12/10/2009 Runtime: 43:46 min. A Fringe investigation is triggered when a patient at a mental institution undergoes an impromptu brain surgery that unexpectedly leaves his brain exposed. Despite the unthinkable circumstances, the patient's condition and sanity miraculously improves before the Fringe team arrives. While Agent Dunham and Peter scan surveillance tapes (and Walter enjoys his pudding), Olivia recognizes a familiar face as Thomas Jerome Newton (guest star SEBASTIAN ROCHE), the leader of the shape-shifters. As similar cases stack up, the Fringe team heads back to the lab to determine exactly how patients are being cured. Walter's brains are put to the test and William Bell (guest star LEONARD NIMOY) resurfaces.
Original air date: 01/14/2010 Runtime: 43:16 min. Following an unexplained attack involving disfigured humans, the Fringe team visits Edina City, a small town in upstate New York, to uncover leads surrounding the bizarre case. When it's determined that these disfigured people have managed to hide themselves for a while and they'll do just about anything to keep it that way, the investigation takes an unexpected turn.
Original air date: 01/21/2010 Runtime: 43:45 min. When a man enters an office in Boston for a meeting, he becomes disoriented and collapses, only to have his veins erupt and spray blood everywhere. Shortly after Olivia and Peter arrive at the scene to investigate the bizarre case, it's discovered that a lethal virus with deep ties to something very valuable is spreading, so the CDC moves in to quarantine the building and eradicate the pathogens. Isolated inside with the rest of the exposed office employees, Peter and Olivia face life-threatening circumstances, sending Walter, Broyles and Astrid on a frantic search for a solution to save them.
Original air date: 01/28/2010 Runtime: 43:46 min. When a specific group of guests at a wedding in Brookline, Massachussetts, suffocate from the inside out, the upsetting and disconcerting crime scene has the Fringe team investigating how the toxin was delivered and targeted. As evidence is taken into the lab, it's discovered that the wedding ceremony was a testing ground for a weaponized science experiment. Adding to the intense lab investigation, Walter uncovers an alarming formula that reveals a link to a branch on the Bishop family tree. With the escalating threat of more deadly attacks and unexpected familial ties to the case, the Fringe team stops at nothing to prevent further catastrophic events.
Original air date: 02/04/2010 Runtime: 43:51 min. After a violent tremor shakes a Manhattan office building to its core, only one survivor is found, leading the Fringe Team to believe he is not from this reality. Walter surmises that what shook the building was not geologic, but rather something discovered in his research with William Bell many years ago. With another catastrophe imminent, the team races to Jacksonville the site of Walter and William's experiments, to help Olivia reconnect with her past in an effort to save hundreds of people from certain death.
Original air date: 04/01/2010 Runtime: 43:56 min. While explaining Peter's otherworldly origins to Olivia, Walter flashes back to 1985 and the mystery springs forward by revealing the past. Also, Peter's mother (guest star ORLA BRADY) is introduced and details of the neighboring world reaffirm that there is definitely more than one of everything.
Original air date: 04/08/2010 Runtime: 43:45 min. When a perfectly 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 innocent victims. Meanwhile, Olivia struggles to keep Walter's secret from Peter and her loyalty to Peter is tested as time goes on.
Original air date: 04/15/2010 Runtime: 43:44 min. 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. As the Fringe team assembles at the bizarre crime scene, Peter remains suspicious that something is amiss with Walter, who is struggling to keep the unimaginable a secret. When the investigation leads them to Alistair Peck (guest star PETER WELLER), a very powerful man who has tremendous energy with severe consequences, an ironic set of circumstances surface.
Original air date: 04/22/2010 Runtime: 43:45 min. When two teenagers on a date turn up “dead” at an abandoned warehouse with the three puncture wounds to the soft palate – a trademark of the alternate world’s shape-shifters – the Fringe team investigates the evidence as well as the motives of mastermind Thomas Jerome Newton (guest star SEBASTIAN ROCHE). Upon discovering a shape-shifting embryo, Walter returns to the lab to conduct further analysis – and Olivia and Peter head to Massive Dynamic for answers. Meanwhile, Peter reveals a family secret to Olivia as Walter struggles to recall what Newton knows about “building a door.”
Original air date: 04/29/2010 Runtime: 43:45 min. Singing and dancing occur when Walter explores his mind! While Walter deals with some very upsetting news - he tells Olivia's niece, Ella (guest star LILY PILBLAD), a fairy tale that includes musical performances by Olivia and Agent Broyles.
Original air date: 05/06/2010 Runtime: 43:49 min. Peter teams up with a local law enforcement official, Sheriff Mathis (guest star MARTHA PLIMPTON), on a serial murder investigation with ties to Thomas Jerome Newton (guest star SEBASTIAN ROCHÉ). Meanwhile, Walter copes with the possibility of being sent back to St. Claire’s – and someone from the “other side” pays a visit.
Original air date: 05/13/2010 Runtime: 43:47 min. In the first of a two-part, two-night second season finale, Walter and Olivia travel to the parallel universe, and the anticipated face-off between Walter Bishop and William Bell occurs when special guest star LEONARD NIMOY returns.