Fringe Connections

The blue powder dispersal doll from "Concentrate and Ask Again" was seen in Walter's storage vault in "The Bullet that Saved the World".

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

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

In "Os" Peter revealed to Olivia that he was working on the Shapeshifter devices that he collected in "Reciprocity" by killing Shapeshifters.

Donald helped Walter set up the pocket universe hiding spot.

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

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.

The Child's happy expression drops when he sees the Observer.

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

Walter looked upset when he found Peter's coin in the lake house in "There's More Than One of Everything" because Peter was holding it as he died in "Peter".

Peter's grave says he died when he was 7.

A seahorse can be seen on Peter's luggage.

The intense amount of Cortexiphan coursing through Olivia in "Brave New World (Part 2)" was able to heal her mortal wound. This was foreshadowed in "Brown Betty" when Olivia was sliced by the same weapon that killed Rachel, yet instead of dying Olivia's skin started to heal itself.

When Walter explains that his red/blue lensed glasses were created by his friend from Washington, Doctor Jacoby, he's referencing the television show 'Twin Peaks' which also had an eccentric man of science, Doctor Jacoby, who wore red/blue lensed glasses very similar to Walter's.

The butterfly glyph can be seen outside the entrance to the daycare center.

Right before Alfred Hoffman grabs an apple from the Bishops' refrigerator in "The Bishop Revival" there is a Rubik's Cube with three greens and one red on its side, a reference to the 'green-green-green-red' pattern from "The Equation".

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

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

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".

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

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

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

Windmark visited his boss, The Commander, in 2609.

A seahorse pattern can be seen in the toxin's molecular structure.