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".

William Bell's name is partially faded/scratched off of the door to the lab.

The flower glyph can be seen on the wall in Karen Truss's house.

Nick Lane is being kept in a coma indefinitely at the end of "Bad Dreams". In "Over There (Part 1)" Olivia learned that he and other found Cortexiphan subjects have been training to keep their abilities under control.

Nick Lane's wardrobe is all dark colors like Olivia's.

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

The Fringe team used the skin-growth toxin from "Ability" as a weapon against the Observers in "An Enemy of Fate".

Mark Young's colleague is wearing a butterfly pin, possibly prompting the subject of his hallucination.

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

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.

Sam Weiss died 10-15 years earlier in a shootout with Observers trying to protect the radio signal relay used to locate Michael.

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

The creature from "Snakehead" and images of it were seen in Walter's storage vault in "The Bullet that Saved the World".

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

A frog can be seen on the dock when Walter is high.

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

Olivia pulled up a list of the frozen heads found in S02E04 'Momentum Deferred' and they were all marked with "2E204", a reference to the episode in which they were stolen.

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

The bus in "The Ghost Network" is ambered. Ambering later becomes a real safety tool used by the other side as seen in "Over There (Part 1)".

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

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

The radio found in the pocket universe in "Through the Looking Glass and What Walter Found There" was stuck on 6955 kHz, the same frequency as the number station broadcasts in "6955 kHz".

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.

A seahorse can be seen on Peter's luggage.