Fringe Connections

The laser knives that the Observers nearly used to operate on Michael in "Liberty" were used by Mr. Gemini in "Brown Betty".

The cuneiform on the boat door says "bí".

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

The Glatterflug ad for daily flights to the moon in "Olivia" is the same air travel company as Flight 627 from "Pilot".

Olivia entered "Martin Luther King/Eldridge Cleaver Memorial Park" which has a plaque quoting them as saying "We have a dream" rather than "I".

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

Olivia saw Brandon as a zombie in her mind in "Lysergic Acid Diethylamide" because he wanted to cut out and study her brain in "Entrada".

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

In "The Box" Bell wrote to Nina in his will "And for the precious few we had alone in Tuscany, a memento of me." In "Five-Twenty-Ten" Bell's old safe had a picture of Nina in Tuscany.

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

When Peter left the hospital in "The Last Sam Weiss" he wrote "I am going home" on an envelope, the same phrase he wrote for Elizabeth in "Subject 13" when he tried to return to his home world.

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

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

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".

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

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

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.

Michael can show emotion as he cried when he saw Nina's dead body.

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

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.

The Redverse traded Alt Broyles for Fauxlivia by cutting off one of his legs to make their masses equal.

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