Fringe Connections

Walter shot Olivia in the head in "Brave new World (Part 2)" like Walternate did in the possible future in "The Day We Died".

One of the envelopes Peter sorted through said "Thank you for your support!", a direct message from the creators of Fringe to all the fans.

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

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.

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

The apple 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 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.

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

Cecil mentions the Observers using a light bomb in "Through the Looking Glass and what Walter Found There", which is what Loyalists threw at Peter in the sewer tunnels in "The Bullet that Saved the World".

Jones is working with Bell, who is alive.

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

Walter sent Peter the white tulip note from "White Tulip" in the mail and Peter received it in "An Enemy of Fate" after the future was successfully altered.

William Bell left Massive Dynamic to Walter.

Butterflies can be seen in Etta's apartment.

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

Observers send materials to themselves via shipping lanes from the future using metal cubes.

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

In "Back to Where You've Never Been" Peter and Lincoln set up the universe portal in the Orpheum Theater, the same place Walter, Olivia, and the Cortexiphan subjects crossed over to rescue Peter in "Over There (Part 1)".

Susan Pratt's wardrobe is full of dark colors like Olivia's and Nick Lane's.

A butterfly can be seen on a lampshade near the front of Olivia's apartment.

Senator Van Horn, who died in "Do Shapeshifters Dream of Electric Sheep?", was still alive in the altered timeline and talked to Broyles in "Brave New World (Part 2)".

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

A seahorse can be seen on the Bishops' refrigerator.