Fringe Connections

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.

William Bell left Massive Dynamic to Walter.

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

"He's Not Dead" on the tombstone in Olivia's dreamscape in "Pilot" actually refers to Peter, not John Scott. Walter visited the grave of Peter Bishop in "There's More Than One of Everything", yet Peter is alive and well.

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

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

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".

Bell stole Walter's David Bowie album 'The Man Who Sold the World', which describes what Bell did multiple times for his own benefit.

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

The combination to Bell's safe in "Concentrate and Ask Again" was 0-5-2-0-1-0, the same combination used in "Five-Twenty-Ten".

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

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

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

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

The posters from Peter's Redverse bedroom in "Subject 13" were hung on the wall when Walternate took him back in "Over There (Part 2)" in order to bring a sense of comfort and familiarity to Peter.

The Fringe team is part of a full-fledged branch of the Department of Defense in the Redverse.

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

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".

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

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

In "Entrada" Fauxlivia was brought back to the Redverse via harmonic transfer with small rods injected into her hands, similar to the harmonic transfer that brought the bridge over in "The Man from the Other Side".

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".

A seahorse can be seen hanging from the taxi when Walter listens to music.