Episode 1
Aired Sep 17, 2009
A New Day in the Old Town
Peter, unwittingly in a race against time with an ominous force, investigates Olivia's visit to a parallel universe.
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Episode 2
Aired Sep 24, 2009
Night of Desirable Objects
A construction worker goes missing after he is mysteriously drawn into an underground tunnel full of human remains; Walter tries to simulate travel between realities on frogs.
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Episode 3
Aired Oct 1, 2009
Fracture
A bomb blows up inside a train station but leaves no trace of any explosive device; Peter and Olivia's investigation leads them to Iraq.
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Episode 4
Aired Oct 8, 2009
Momentum Deferred
Olivia consumes a concoction Dr. Bishop gives her in hopes of stimulating her memory; the team investigates a series of robberies connected to shape-shifting.
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Episode 5
Aired Oct 15, 2009
Dream Logic
In Seattle the team investigates a man's attack on his boss, who he thought was a ram-horned demon; Broyles has a disconcerting meeting with Nina Sharp of Massive Dynamic.
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Episode 6
Aired Nov 5, 2009
Earthling
The Fringe Division undertakes a puzzling investigation into why victims are disintegrating into ash; the case casts light on Broyles' past; personal details about the division leader emerge.
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Episode 7
Aired Nov 12, 2009
Of Human Action
A kidnapping rapidly escalates into a hostage situation, and authorities closing in discover that an unknown force has mind-blowing consequences; Fringe Division identifies a link between the incident and Massive Dynamic.
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Episode 8
Aired Nov 19, 2009
August
A peculiar abduction in Boston leads the team to uncover details of the mysterious man known as the Observer; Walter, Peter and Astrid analyze unusual evidence and deal with Walter's insatiable appetite for milkshakes.
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Episode 9
Aired Dec 3, 2009
Snakehead
When a cargo ship runs aground, the shoreline is littered with bodies, each hosting a large squidlike creature.
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Episode 10
Aired Dec 10, 2009
Grey Matters
A patient at a mental hospital undergoes an impromptu surgery that unexpectedly leaves his brain exposed; Olivia sees a familiar face; William Bell resurfaces.
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Episode 11
Aired Jan 11, 2010
Unearthed
After a teenage girl is pronounced brain dead she mysteriously reawakens, seemingly with the mind of a high-ranking Russian soldier.
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Episode 12
Aired Jan 14, 2010
Johari Window
The team investigates a small town in upstate New York where disfigured people attempt to hide themselves.
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Episode 13
Aired Jan 21, 2010
What Lies Below
Walter, Broyles and Astrid race to save Peter and Olivia when they are exposed to a life-threatening virus.
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Episode 14
Aired Jan 28, 2010
The Bishop Revival
When a group of wedding guests in Massachusetts suffocate from the inside out, the team must find out how the toxin was delivered and targeted.
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Episode 15
Aired Feb 4, 2010
Jacksonville
After a violent tremor shakes a Manhattan office building, the sole survivor leads the team to believe he is not from this reality; Olivia must face her mysterious past to save hundreds of people from certain death.
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Episode 16
Aired Apr 1, 2010
Peter
While explaining Peter's otherworldly origins to Olivia, Walter flashes back to 1985; Peter's mother is introduced.
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Episode 17
Aired Apr 8, 2010
Olivia. In the Lab. With the Revolver.
A perfectly healthy woman inexplicably dies; Olivia tries to keep Walter's secret from Peter.
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Episode 18
Aired Apr 15, 2010
White Tulip
While investigating the mysterious deaths of passengers on a commuter train, Peter remains suspicious of Walter; the investigation leads the team to a very powerful man (Peter Weller).
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Episode 19
Aired Apr 22, 2010
The Man From the Other Side
A shape-shifting embryo is discovered; Peter shares a family secret with Olivia.
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Episode 20
Aired Apr 29, 2010
Brown Betty
Walter deals with upsetting news and tells Olivia's niece a fairy tale.
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Episode 21
Aired May 6, 2010
Northwest Passage
Peter teams up with Sheriff Mathis on a mysterious murder case; Walter faces the possibility of being sent back to St. Claire's; someone from the "other side" visits.
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Episode 22
Aired May 13, 2010
Over There
Olivia travels to the parallel universe with Walter, who faces-off with William Bell (Leonard Nimoy).
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Episode 23
Aired May 20, 2010
Over There
Sacrifices are made and both universes may forever be changed.
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