Fringe Connections

William Bell left Nina a bell in his will in "The Box". Walter rang that bell in "Os" which initiated Bell's soul magnet experiment.

This episode reveals that there is more than one Observer. The intro sequence since the pilot episode has had a single frame that says "OBSERVERS ARE HERE".

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

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.

There are 'Wanted' billboards for the Fringe team.

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

James Heath met with Lloyd Becker, a fellow Cortexiphan subject, in "Olivia. In the Lab. With the Revolver.". The name "Lloyd B." was on the height chart in "Jacksonville".

Who did the Observer say was "still alive," Peter or Walter?

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

The boy in "Alone in the World" played with the same action figure Peter showed to the Child in "Inner Child".

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.

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

The bus in "The Ghost Network" is ambered. Ambering later becomes a real safety tool used by the other side as seen in "Over There (Part 1)".

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

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

The Observer's binoculars in "The Arrival" have the green-green-green red pattern from "The Equation" at the bottom left corner.

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

The creatures from "Snakehead" were used as a weapon against the Observers and Loyalists in "An Enemy of Fate".

Windmark visited his boss, The Commander, in 2609.

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

There was a white tulip in Walternate's bedroom in "Immortality" when he was struggling with what he had to do to save his world, suggesting that the symbol has meaning for him just like it did for Walter in "White Tulip".

The briefcase contained photos of Walter.

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