Fringe Connections

In "The Ghost Network" Roy had visions of the crash of Flight 627 from "Pilot", suggesting that that incident is part of a larger pattern of incidents and not a one-off event.

Olivia pulled up a list of the frozen heads found in S02E04 'Momentum Deferred' and they were all marked with "2E204", a reference to the episode in which they were stolen.

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

September loads his food with heat (pepper, jalapenos, hot sauce) in "The Arrival" because his emotions are dulled, as he explained in "The Boy Must Live".

One of the envelopes Peter sorted through said "Thank you for your support!", a direct message from the creators of Fringe to all the fans.

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

The ship at the end of "Brave New World (Part 2)" showed the creatures from "Snakehead".

Donald helped Walter set up the pocket universe hiding spot.

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

The End Dock Stabilizer's lights in "An Origin Story" flashed the 'green-green-green-red' pattern from "The Equation" when Peter finished assembling it.

It is true that the Empire State Building's spire really was initially designed for airship docking as it was in the Redverse.

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

Olivia's pregnancy dream in "The Same Old Story" is in a waiting area with giant tulips.

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

A seahorse can be seen in Walter's Monty Python trip.

The password to retrieve Michael in "Black Blotter", "Black Umbrella", came from the poster for Singin' in the Rain, from which September chose his new name (Donald O'Connor) in "The Boy Must Live".

When Nina looks in Bell's storage room for his copy of the First People book the camera pans by a copy of 'Dr. Spock's Baby and Childcare'.

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

Walter stole Bell's hand in "Letters of Transit" to gain access to Bell's personal storage unit in "Five-Twenty-Ten".

Sam Weiss died 10-15 years earlier in a shootout with Observers trying to protect the radio signal relay used to locate Michael.

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

Joseph Meegar is able to control electronics around him in "Power Hungry" like the Observers can, such as August starting a car with his finger in "August".

The briefcase contained photos of Walter.

The flower glyph can be seen on the wall in the diner where Olivia and Lincoln meet.