Fringe Connections

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.

Jones is working with Bell, who is alive.

A seahorse pattern can be seen in the toxin's molecular structure.

Jones stole a very powerful energy cell from Nina's arm in "There's More Than One of Everything." In "Enemy of My Enemy" Jones was trying to locate and steal a similarly powerful energy source, amphilicite.

William Bell's name is partially faded/scratched off of the door to the lab.

A hand can be seen on the wall when Olivia and Peter attack the Observers and Loyalists.

The hallucinogenic drug from "The Dreamscape" was used as a weapon against the Observers in "An Enemy of Fate" to make them think they were being attacked by butterflies.

The green and yellow posters in the diner represent how this new timeline with the yellow/amber title sequence is starting to merge with the original timeline with the blue title sequence now that Peter has returned (blue + yellow = green).

The seahorse glyph can be seen as Olivia and Shapeshifter Charlie fight in the alley.

In "Brave New World (Part 1)" Walter sat in his old cell at St. Claire's from "Pilot".

Mark Young's colleague is wearing a butterfly pin, possibly prompting the subject of his hallucination.

A seahorse can be seen on the Bishops' refrigerator.

In "Back to Where You've Never Been" Peter and Lincoln set up the universe portal in the Orpheum Theater, the same place Walter, Olivia, and the Cortexiphan subjects crossed over to rescue Peter in "Over There (Part 1)".

The Fringe team is part of a full-fledged branch of the Department of Defense in the Redverse.

Butterflies can be seen in Olivia's bedroom.

Broyles had jazz posters in his storage unit in "Earthling". His character in "Brown Betty" performed in a jazz bar.

Windmark visited his boss, The Commander, in 2609.

The flower glyph can be seen on the wall in Karen Truss's house.

In "6:02 AM EST" Walternate trapped Fauxlivia in the same cell as Olivia was kept in in "Over There (Part 2)".

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

Butterflies can be seen in Etta's apartment.

The bus in "The Ghost Network" was ambered. Huge sections of cities were ambered in the Redverse in "Over There (Part 2)".

The opening crawl is an homage to Blade Runner.

A seahorse can be seen on Peter's luggage.