Fringe Connections

Walter stole Bell's hand in "Letters of Transit" to gain access to Bell's personal storage unit in "Five-Twenty-Ten".

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

A seahorse can be seen on Peter's luggage.

Ten Observers are present on Liberty island in "The Day We Died" from an assumed total of 12. One of the missing two Observers might be John Mosley, a potential former Observer, who was killed in "The Arrival". See the FAQs for more information (note: FAQs contain spoilers through season 5).

The cuneiform on the boat door says "bí".

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

Walter used the clapper to turn on the lights in "In Absentia". He installed it in "Midnight".

It is true that the Empire State Building's spire really was initially designed for airship docking as it was in the Redverse.

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

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".

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

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

William Bell had a bell on his desk in "There's More Than One of Everything" and rang it after he introduced himself to Olivia. He left a similar bell to Nina in his will in "The Box".

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

Butterflies can be seen in Etta's apartment.

William Bell left Nina a bell in his will in "The Box". Walter rang that bell in "Os" which initiated Bell's soul magnet experiment.

The briefcase contained photos of Walter.

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

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".

When Nina looks in Bell's storage room for his copy of the First People book the camera pans by a copy of 'Dr. Spock's Baby and Childcare'.

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

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".

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