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Dunham, Olivia
Watch Fringe Season 4 Episode 22
"Brave New World Part 2"
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It has all come down to this on the season four finale of Fringe. Which world will survive?

Blast to the Past
Watch Fringe Season 4 Episode 21
"Brave New World, Part 1"
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Walter must revisit his past this week when a mysterious event threatens the world. It's part one of the season four finale.

Peter Considers New Developments
Watch Fringe Season 4 Episode 20
"Worlds Apart"
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Shocking developments come to light about the Cortexiphan children on this episode of Fringe.

Walter Gets Disturbing News
Watch Fringe Season 4 Episode 19
"Letters In Transit"
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In 2036 the Observers and the Fringe team find themselves involved in an epic battle.

Lincoln & Bolivia Discuss a Case on Fringe
Watch Fringe Season 4 Episode 18
"The Consultant"
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When a Fringe event affects both worlds, Walter travels to the alternate universe to help. David Robert Jones picks his next target.

Alt. Lincoln
Watch Fringe Season 4 Episode 17
"Everything in its Right Place"
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Lincoln Lee visits the Alternate Universe to assist on a case.

Nothing As It Seems Scene
Watch Fringe Season 4 Episode 16
"Nothing As It Seems"
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A Fringe cast is familiar to Peter on this episode, but it's brand new to everyone else.

Peter on the Prowl
Watch Fringe Season 4 Episode 15
"A Short Story About Love"
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Peter tries to decide what to do about Olivia this week, while a killer is out and about, targeting love.

Peter on the Phone
Watch Fringe Season 4 Episode 14
"The End of All Things"
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This is a significant episode of Fringe, as Peter and the team take extraordinary steps to prevent life-threatening events.

A Better Human Being Scene
Watch Fringe Season 4 Episode 13
"A Better Human Being"
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The Fringe team investigates a series of murders on this episode, "A Better Human Being."

Shotgunned Peter
Watch Fringe Season 4 Episode 12
"Welcome to Westfield"
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Peter is trapped in a mysterious town on Fringe this week, while Olivia barely escapes from a collapsing building.

Making Angels Scene
Watch Fringe Season 4 Episode 11
"Making Angels"
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Astrid receives an unexpected visit this week, while Peter and Olivia go after a murderer equipped with a toxic, dangerous weapon.

Reaction from Olivia
Watch Fringe Season 4 Episode 10
"Forced Perspective"
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Olivia is distracted this week by a warning from the Observers, while Peter assists with the search for a mysterious girl.

Peter, Armed
Watch Fringe Season 4 Episode 9
"Enemy of My Enemy"
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A new adversary makes his presence felt on this episode of Fringe. He shows up during Peter's visit to the other side.

Clue Tracking
Watch Fringe Season 4 Episode 8
"Back To Where You've Never Been"
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Peter confronts Walternate on the first Fringe episode of 2012. Olivia, meanwhile, learns of a dire premonition.

Studying a Diagram
Watch Fringe Season 4 Episode 7
"Wallflower"
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The Fringe team looks into a couple mysterious deaths and their connection to an unknown genetic disorder this week. Olivia also suffers some major headaches.

Stephen Root and Romy Rosemont on Fringe
Watch Fringe Season 4 Episode 6
"And Those We've Left Behind"
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Stephen Root guest stars on this episode of Fringe. Read on for a recap of the latest Fringe episode.

Lincoln in Action
Watch Fringe Season 4 Episode 5
"Novation"
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Arye Gross comes on board this week as a scientist. Read on for our latest Fringe recap.

Scared Olivia
Watch Fringe Season 4 Episode 4
"Subject 9"
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It's off to Massive Dynamic in New York this week for Walter and Olivia. That's a big step for the former.

Walter and a Child
Watch Fringe Season 4 Episode 3
"Alone in the World"
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Aaron Bird guest stars this week as an infected boy. Walter takes a special interest in the case.

Worlds Collide
Watch Fringe Season 4 Episode 2
"One Night in October"
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The body count rises Over There as the result of a serial killer this week. The the murderer's alternate identity takes the case Over Here.

Fringe Season 4 Premiere Pic
Watch Fringe Season 4 Episode 1
"Neither Here Nor There"
Original Air Date:

A lot has changed on Fringe. The season four premiere picks up in the wake of season three's shocking revelation about Peter.