Fringe Connections

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)".

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

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

September's security system flashed the 'green-green-green-red' pattern from "The Equation" before exploding in "The Boy Must Live".

Walter's pose as he listens to the Mozart Requiem is a reference to the iconic Maxell tape advertisement from the '80s.

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

Peter said "You're going to be fine" to Olivia in "Brown Betty", like Charlie's "You're gonna be fine" message to Olivia in "Dream Logic".

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

The leaf 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.

Madison Square Garden in the Redverse is quarantined in amber.

Butterflies can be seen in Etta's apartment.

Peter's map of Walter's crimes in "Brown Betty" resembles the map of Pattern cases in "There's More Than One of Everything".

The yellow dot in the final glyph of the episode is replaced by a yellow heart.

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

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".

Marshall Bowman had a disk in his hand like John Scott and the woman in 'The Ghost Network'.

A leaf can be seen on the bio-scan monitor at the Liberty Island security checkpoint.

When Peter left the hospital in "The Last Sam Weiss" he wrote "I am going home" on an envelope, the same phrase he wrote for Elizabeth in "Subject 13" when he tried to return to his home world.

There are 'Wanted' billboards for the Fringe team.

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

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

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

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