Fringe Connections

In "Grey Matters" Walter's brain pieces were stored the heads of living people. In "Letters of Transit", in the altered timeline, they were stored in Massive Dynamic.

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 leaf glyph is on the electronic keypad at Massive Dynamic.

The nanites in "Brave New World (Part 1)" have an "X" on them that matches the "X" on the shirt worn by the man Peter freed from Olivia's mind in "Lysergic Acid Diethylamide", suggesting that "Mr. X" from Olivia's mind may have been William Bell (who was ultimately behind the nanites).

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

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".

The green and yellow posters in the diner represent how this new timeline with the yellow/amber title sequence is starting to merge with the original timeline with the blue title sequence now that Peter has returned (blue + yellow = green).

A hand can be seen on the wall when Olivia and Peter attack the Observers and Loyalists.

Olivia shot her captors in "The Human Kind" with the bullet she took from Etta in "The Bullet that Saved the World".

All of the people in Olivia's mind wear blacks and greys because Cortexiphan subjects have a strong desire to blend in.

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

Walter used the same neural halo in "Lysergic Acid Diethylamide" as he used on the Child in "Inner Child".

Susan Pratt's wardrobe is full of dark colors like Olivia's and Nick Lane's.

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

The Porcupine Man from "Nothing as it Seems" was seen in Walter's storage vault in "The Bullet that Saved the World".

Olivia struck James Heath with a candlestick in her dining room, making the title a complete red herring.

The hand glyph can be seen on the piano stool in the Orpheum Theater in the Redverse.

Walter sent Peter the white tulip note from "White Tulip" in the mail and Peter received it in "An Enemy of Fate" after the future was successfully altered.

The crane that crashed during the intro has a Massive Dynamic logo on it.

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

The neon green fairy seen in the black market in "Transilience Thought Unifier Model-11" is like the green fairy Walter hallucinated in "Black Blotter".

In his dream at the end, young Peter is in bed wearing a jersey with the number 96 on it. The number 96 is the same jersey number that Joshua Jackson wore as Charlie Conway in the Mighty Ducks trilogy.

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