Fringe Connections

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

Walter's pose as he listens to the Mozart Requiem is a reference to the iconic Maxell tape advertisement from the '80s.

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

The rollercoaster seen from atop the World Trade Center in Olivia's mind in "Lysergic Acid Diethylamide" is a reference to the one she rode with Ella in "August".

Donald entered the mine 5 weeks after the invasion and took some rocks. He was described as being in his late 30s, medium height, dark hair. Donald said he was waiting for "a colleague, a scientist from Boston, to meet him." Observers found him and took him away.

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

Walter thought of Peter when he saw the image of a coffin in "Grey Matters" because his Peter died in "Peter".

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

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

Despite Walternate's efforts to mold Olivia's mind into Fauxlivia's, Olivia kept seeing Peter and Walter in "Amber 31422". Similarly, in "Alone in the World" Peter didn't exist in the rewritten timeline yet Olivia kept having visions of him.

The Fringe team is the First People. Walter sent the parts of the machine back through time via the wormhole in Central Park. That's why the First People had such a knowledge of Peter and Olivia.

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

Walter stole Bell's hand in "Letters of Transit" to gain access to Bell's personal storage unit in "Five-Twenty-Ten".

The episode opened in "Manhatan", seemingly a typo but actually signifying this was an alternate Manhattan.

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

Fauxlivia studied old Fringe cases for intel in "The Box", including Olivia's taped testimony from "Dream Logic".

There are 'Wanted' billboards for the Fringe team.

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

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.

Marshall Bowman had a disk in his hand like John Scott and the woman in 'The Ghost Network'.

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

The anti-gravity osmium bullets from "Os" were used as a weapon against the Observers and Loyalists in "An Enemy of Fate".

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

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