Fringe Connections

In "Liberty" the Fringe team used the universe window from "Peter" to help them rescue Michael.

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

A seahorse can be seen on Peter's luggage.

Walter had the Cortexiphan subjects stand in a circle around him to activate their abilities in "Over There (Part 1)" just like he did when they were children in "Subject 13".

The Redverse traded Alt Broyles for Fauxlivia by cutting off one of his legs to make their masses equal.

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

Peter found Olivia in a field of white tulips in "Subject 13", a nod to "White Tulip".

Jones said there are 10 tests for Olivia in total. The first was a box of lights that Olivia had to turn off with her mind.

Butterflies can be seen in Olivia's bedroom.

In "And Those We've Left Behind" Peter picked up the same toy plane (perhaps not literally the same) that he played with in "Subject 13".

Walter's pose as he listens to the Mozart Requiem is a reference to the iconic Maxell tape advertisement from the '80s.

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

The blue powder dispersal doll from "Concentrate and Ask Again" was seen in Walter's storage vault in "The Bullet that Saved the World".

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

A leaf can be seen on the bio-scan monitor at the Liberty Island security checkpoint.

The Fringe team used the skin-growth toxin from "Ability" as a weapon against the Observers in "An Enemy of Fate".

When Walter explains that his red/blue lensed glasses were created by his friend from Washington, Doctor Jacoby, he's referencing the television show 'Twin Peaks' which also had an eccentric man of science, Doctor Jacoby, who wore red/blue lensed glasses very similar to Walter's.

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

September's device in "A Short Story About Love" led Peter to the beacon from "The Arrival".

There is a Massive Dynamic logo on Flight 627's engine.

A seahorse can be seen on the Bishops' refrigerator.

Walter had his life's work in a journal in "Black Blotter" just like he did in the fairy tale he told Ella in "Brown Betty".

Donald helped Walter set up the pocket universe hiding spot.

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