Fringe Connections

The ship at the end of "Nothing as it Seems" shows creatures like the Porcupine Man from "The Transformation".

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.

A seahorse can be seen on the Bishops' refrigerator.

Peter ran possible futures in "Five-Twenty-Ten" to try to coerce the Observers to be where he wanted them to be just like Milo Stanfield did to his doctors in "The Plateau".

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

A butterfly can be seen attacking Mark Young.

A butterfly shadow box like those seen in "The Dreamscape" was seen in Walter's storage vault in "The Bullet that Saved the World".

Jones is working with Bell, who is alive.

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

In "Liberty" the Fringe team used the universe window from "Peter" to help them rescue Michael.

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

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

Walter hid the beacon at the tombstone of his father, Robert Bishop, in "The Arrival". Robert Bishop's work and history is central to the plot of "The Bishop Revival".

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

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

The opening scenes of "Letters of Transit" reference Casablanca (a man named Rick owning an upscale nightclub). Peter and Fauxlivia watched Casablanca together in "The Abducted".

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

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

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

Carr's work review sent to Astrid from his previous employer shows that in the three years prior to his dismissal, he only missed three days of work. He was out for only one day each year and each year it was the same day: Valentine's Day.

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

Jones presented Olivia with the light box test in "The End of All Things" just as he did in "Ability".

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 as Olivia and Shapeshifter Charlie fight in the alley.