Fringe Connections

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.

Bell stole Walter's David Bowie album 'The Man Who Sold the World', which describes what Bell did multiple times for his own benefit.

A butterfly can be seen painted on the side of a white trash can.

In "Entrada" Fauxlivia was brought back to the Redverse via harmonic transfer with small rods injected into her hands, similar to the harmonic transfer that brought the bridge over in "The Man from the Other Side".

The briefcase contained photos of Walter.

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

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

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

A butterfly can be seen on a lampshade near the front of Olivia's apartment.

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

Nick Lane's wardrobe is all dark colors like Olivia's.

The butterfly glyph can be seen near Lincoln in the rail yard.

Walter said that Nancy Lewis looked familiar in "The Road Not Taken"; her name is on a height chart in the daycare center where the Cortexiphan trials took place in "Jacksonville".

Marshall Bowman had a disk in his hand like John Scott and the woman in 'The Ghost Network'.

The hand glyph can be seen on the piano stool in the Orpheum Theater in the Redverse.

Agent Jessup was relating season 1 Fringe cases to Bible verses in "A New Day in the Old Town". In "Nothing as it Seems", creatures can be seen on something resembling Noah's Ark.

The episode ends with September going into December's apartment, apartment 513, the episode code of the next and final episode of the series.

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

The entire story of Fringe started in "Peter" when Walter crossed worlds with a boy that wasn't his because he couldn't stand to let Peter die, and the entire story concluded in "An Enemy of Fate" when Walter crossed worlds with a boy that wasn't his knowing that by doing so he would never see Peter again.

Windmark said "Nothing grows from scorched earth" to Walter and then later Walter saw a dandelion growing from rubble outside. He has hope.

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

The rollercoaster seen from atop the World Trade Center in Olivia's mind in "Lysergic Acid Diethylamide" is a reference to the one she rode with Ella in "August".

The Fringe team is the First People. Walter sent the parts of the machine back through time via the wormhole in Central Park. That's why the First People had such a knowledge of Peter and Olivia.

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