Walter Bishop does the unthinkable to save his son Peter.

Walter Bishop does the unthinkable to save his son Peter.

Walter's actions have very different repercussions for he and his alternate.

Olivia Dunham is pulled into the world of Fringe Division.

It is discovered that many of the Fringe cases have connections to Walter's past work.

Fringe Division in the alternate universe is in an epic race against time.

Walter & Olivia cross over to the alternate universe in the hopes of rescuing Peter.

Our Olivia is trapped over there, while their Olivia takes her place over here.

The two Olivia's are each desperate to find their way back home.

Peter faces his true destiny and risks everything to save our world.

Peter finds himself fifteen years into the future.

Walter and Peter are desperate to change future events, in the twelfth installment of Fringe

The crew talk about the making of the pilot of Fringe and the vision they shared.

The crew talk about the making of episode 3 of season 1.

The crew talk about making episode 13 of season 1.

The crew talk about making the season 1 finale.

The creators of the show discuss how Fringe unfolded and the qualities that make the series so unique. Warning: Spoiler Alert! Watch after Season 1.

From teleportation to re-animation, Fringe incorporates recent discoveries in science and how much is possible. Warning: Spoiler Alert! Watch after Season 1.

The story, as told by producers and cast, of how Anna Torv, Joshua Jackson and John Noble and others came to be cast in the series. Illustrated with unique, raw footage of their auditions! Warning: Spoiler Alert! Watch after Season 1.

Roberto Orci talks about the making of Fringe in Toronto.

Dive deep into the creation of the shared dream state with some of the biggest VFX shots of the show. Warning: Spoiler Alert! Watch after Season 1.

Season 1 gag reel.

A look at the cows that played Gene.

The series producers and consulting scientists explore the mythology of Fringe.

Season 2 Gag Reel

John Noble and Property Master Rob Smith take us on a tour of the Fringe Lab Set to see some notable props from the show.

The alternate universe depicted in Fringe, at its core, isn't solely the making of science fiction. Examine the themes of an alternate universe and the effects they have on the actors and the portrayal of their characters.

Writers and producers share the visual style they wanted to depict in the alternate world. Join the production and art departments as they reveal the inspirations and designs used to bring that world to life.

A look at The Machine and the effect it has on Peter and the worlds around him.

Though the characters share the same DNA, learn how the actors developed variations on their performances. Then, see how the looks of the actors were changed to fit their alt-world selves through the wardrobe and hair/make-up departments.

Experience how the creative team behind Fringe taps into your psyche to toy with your subconscious mind through audio.

Executive Producer Jeff Pinkner and Visual Effects Supervisor Jay Worth answer questions about who The First People are and their ties to Peter and Dr. Bishop.

Season 3 gag reel.

Experience first-hand the pressures of animation under tight TV deadlines.

J. H. Wyman and Jeff Pinkner discuss their approach to the Fringe world without Peter Bishop as the cast weighs in on how this unique storyline affected their roles this season.

A truly in-depth look into the world of The Observers which delves into the intentions, idiosyncrasies and purpose of these mysterious characters, through conversations with the executive producers, creators and cast.

A roundtable discussion with some of the most distinguished minds in science and science fiction including the show runners Jeff Pinkner and J. H. Wy,an, actor John Noble, Professors in philosophy and physics, and moderator Entertainment Weekly's Jeff Jensen

Everyone's favourite Walter moments.

Season 4's gag reel

TV Guide's Damian Holbrook moderates intimate memories and moments with cast and crew.

Season 5 gag reel.

Personal reflections from series creator J. J. Abrams, Executive Producer J. H. Wyman and the cast.