Fringe Connections

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".

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 leaf glyph is on the electronic keypad at Massive Dynamic.

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.

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

A butterfly can be seen painted on the side of a white trash can.

The Observers read Broyles' phone call from the impressions his sound waves made on the glass in his car in "An Enemy of Fate", like Peter did in to hear the phone call Nancy Lewis made in "The Road Not Taken".

The opening crawl is an homage to Blade Runner.

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

Olivia's pregnancy dream in "The Same Old Story" is in a waiting area with giant tulips. Young Olivia fled to a field with white tulips when she got scared in "Subject 13".

The cuneiform on the boat door says "bí".

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

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

Donald helped Walter set up the pocket universe hiding spot.

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

A leaf glyph matching the Massive Dynamic security screen in "Pilot" is displayed on the bio-scan monitor on Liberty Island in "Neither Here Nor There".

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.

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

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.

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.

A frog can be seen in Walter's Monty Python trip.

James Heath met with Lloyd Becker, a fellow Cortexiphan subject, in "Olivia. In the Lab. With the Revolver.". The name "Lloyd B." was on the height chart in "Jacksonville".

The briefcase contained photos of Walter.

A seahorse can be seen on Peter's luggage.