Fringe Connections

When Peter drove up to the lake house in "There's More Than One of Everything" the camera focused on his car through a red panel of stained glass, foreshadowing that Peter was taken from the Redverse in "Peter".

The opening crawl is an homage to Blade Runner.

A seahorse can be seen hanging from the taxi when Walter listens to music.

Michael played the music box from "The Boy Must Live" for September after September got shot in "An Enemy of Fate".

Peter's grave says he died when he was 7.

The flower glyph can be seen on a door in the pocket universe.

A flashback at the end of "Grey Matters" revealed that it was William Bell who removed the pieces of Walter's brain. In "Over There (Part 2)" Bell said he removed the pieces at Walter's own request due to fears about the man he was becoming.

There are 'Wanted' billboards for the Fringe team.

A hand can be seen outside the entrance to the daycare center.

Walter's car in "The Same Old Story" has a severed hand in a jar, and Peter jokes "Friend of yours?". Walter eventually cuts William Bell's hand out of amber in "Letters of Transit".

Donald helped Walter set up the pocket universe hiding spot.

A frog can be seen on the dock when Walter is high.

In "Black Blotter" Walter had a vision of his scuffle with Nina at Reiden Lake from "Peter" and later recalled other memories from that day.

Carr's work review sent to Astrid from his previous employer shows that in the three years prior to his dismissal, he only missed three days of work. He was out for only one day each year and each year it was the same day: Valentine's Day.

Butterflies can be seen in Olivia's bedroom.

Walter gave the Child M&Ms in the pocket universe in "Through the Looking Glass and What Walter Found There" because he ate them with Olivia in "Inner Child".

Observers send materials to themselves via shipping lanes from the future using metal cubes.

The seahorse glyph can be seen on the back of one of Markham's books.

Olivia's therapist in "Nothing as it Seems" is the same one she had when she was trapped on the other side in "Olivia".

The briefcase contained photos of Walter.

The apple glyph can be seen on a door in the pocket universe.

Despite Walternate's efforts to mold Olivia's mind into Fauxlivia's, Olivia kept seeing Peter and Walter in "Amber 31422". Similarly, in "Alone in the World" Peter didn't exist in the rewritten timeline yet Olivia kept having visions of him.

Who did the Observer say was "still alive," Peter or Walter?

The frog glyph can be seen on a door in the pocket universe.