Fringe Connections

Walter's password at Massive Dynamic in "Letters of Transit" is 0-5-2-0-1-0, the same as the combination to the Jacksonville daycare center and to Bell's safe in "Five-Twenty-Ten".

Donald entered the mine 5 weeks after the invasion and took some rocks. He was described as being in his late 30s, medium height, dark hair. Donald said he was waiting for "a colleague, a scientist from Boston, to meet him." Observers found him and took him away.

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

The universe window from "Peter" was seen in Walter's storage vault in "The Bullet that Saved the World".

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

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

"He's Not Dead" on the tombstone in Olivia's dreamscape in "Pilot" actually refers to Peter, not John Scott. Walter visited the grave of Peter Bishop in "There's More Than One of Everything", yet Peter is alive and well.

Susan Pratt's wardrobe is full of dark colors like Olivia's and Nick Lane's.

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

Walter thought of Peter when he saw the image of a coffin in "Grey Matters" because his Peter died in "Peter".

The flower glyph glitches away after the scene where Olivia's fear caused her to interrupt all the electronics in the room.

Butterflies can be seen on a box in September's apartment.

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".

William Bell left Massive Dynamic to Walter.

The apple glyph can be seen on the backrest of a chair in the lab.

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.

Windmark visited his boss, The Commander, in 2609.

The leaf glyph is on the electronic keypad at Massive Dynamic.

The intense amount of Cortexiphan coursing through Olivia in "Brave New World (Part 2)" was able to heal her mortal wound. This was foreshadowed in "Brown Betty" when Olivia was sliced by the same weapon that killed Rachel, yet instead of dying Olivia's skin started to heal itself.

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

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

The super-sized cold virus from "Bound" was used as a weapon against the Observers in "An Enemy of Fate".

The yellow dot in the final glyph of the episode is replaced by a yellow heart.

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