Fringe Connections

Michael played the music box from "The Boy Must Live" for September after September got shot in "An Enemy of Fate".

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

The End-of-Dayers used light bombs called Electrilights in "The Day We Died". Loyalists threw a light bomb at Peter in the sewer tunnels in "The Bullet that Saved the World".

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

Windmark probed Walter's mind so forcefully in "Transilience Thought Unifier Model-11" that it caused blood vessels in Walter's eye to pop. In "Liberty" Michael resisted Windmark's mind probe, and possibly probed Windmark's mind back, causing blood vessels to pop in Windmark's eye.

William Bell left Massive Dynamic to Walter.

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

The ship at the end of "Nothing as it Seems" showed the creatures from "Snakehead".

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".

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

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.

Windmark visited his boss, The Commander, in 2609.

Butterflies can be seen in Olivia's bedroom.

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

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

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

William Bell had a bell on his desk in "There's More Than One of Everything". He rang it after he introduced himself. He did that to prime Olivia to receive his soul should he die in the future. Walter rang that bell in "Os" and Olivia became inhabited by William Bell.

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

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

Simon Foster was trapped in amber in "Letters of Transit" and the Observers were experimenting on Simon's head in the Ministry of Science in "In Absentia".

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 seahorse can be seen on Peter's luggage.