The End of All Things

The End of All Things

Season 4, Episode 14
Aired: February 24th, 2012
Written By: David Fury
Directed By: Jeff Hunt

Recaps: Fandom Wiki | Fringepedia | AV Club
Resources: IMDb | Wikipedia | Transcript
Listen: The Fringe Podcast


As David Robert Jones uses a captive Nina in an effort to activate Olivia's Cortexiphan-enhanced abilities, the dying Observer visits Peter and Walter at their lab. Peter must merge his mind with September's in order to learn his secrets.

Synopsis provided by the Fandom Wiki, Fringepedia, and Wikipedia.


This episode's glyphs spell:


Glyph symbol UGlyph symbol NGlyph symbol IGlyph symbol TGlyph symbol E
Glyph symbol U
Glyph symbol N
Glyph symbol I
Glyph symbol T
Glyph symbol E


The Observer is featured in this episode and Peter goes into his mind.



Previous Episode Clue

A newspaper ad in 'A Better Human Being' that says "Your Travel Adventure - Sun Passes" hints at where Peter goes with the Observer, and what Peter learns there, in 'The End of All Things'.

Previous episode clue

Next Episode Clue

A door marked "Burn Unit" in 'The End of All Things' hints at the villain's burned face and burned marks on his victims' necks in 'A Short Story About Love'.

Next episode clue


  • Jones' goal is the same as in season 1.
  • Peter's shared dream state with September looks like an observation deck. (Image 1)
Item of interest: Observation deck in September's mind
Image 1
Observation deck in September's mind




Walter made a butter and rainbow sprinkle sandwich.
Walter's Food: Butter and rainbow sprinkle sandwich
Butter and rainbow sprinkle sandwich


A visualization of all the ways this episode connects to other episodes. Scroll down to see the actual connections.
Connection chart: The End of All Things


S1E01 - Pilot

  • Peter went into September's mind for information in "The End of All Things" like Olivia went into John Scott's mind in "Pilot".

S1E14 - Ability

  • Jones presented Olivia with the light box test in "The End of All Things" just as he did in "Ability". (Image 1)
Connection: Light box
Image 1
S4E14 - The End of All Things
Light box

S1E17 - Bad Dreams

  • Peter (in "The End of All Things"):
    "How did you do that? How did you know how to concentrate your power?"
    "Well, I, uh -- I didn't. I just know that when I was a little girl, I did something similar."

    Walter watched a video of the aftermath of Olivia's explosive childhood incident in "Bad Dreams". (Image 1)

Connection: Young Olivia after her explosion
Image 1
S1E17 - Bad Dreams
Young Olivia after her explosion

S1E20 - There's More Than One of Everything

  • Jones getting shot had no effect on him in both "There's More Than One of Everything" and "The End of All Things" due to the effects of his teleportation out of prison.

S2E15 - Peter

  • In "The End of All Things" September said that he made a mistake when he distracted Walternate in his lab in "Peter" and saving Walter and Peter from the icy lake was an attempt to rectify that mistake. (Image 1)
Connection: September and Peter inside September's mind
Image 1
S4E14 - The End of All Things
September and Peter inside September's mind

S3E15 - Subject 13

  • Jones tried to trigger Olivia's abilities in "The End of All Things" by harming Nina, generating a mixture of fear and love, the emotional combination discovered by Walter in "Subject 13". It finally worked when Peter was brought in because Olivia's relationship with Nina was fading but her relationship with Peter was growing stronger.

S3E18 - Bloodline

  • In "The End of All Things" September told Peter about Henry, the son he never knew existed, who was born in "Bloodline". (Image 1)
Connection: Peter learning about Henry
Image 1
S4E14 - The End of All Things
Peter learning about Henry

S3E19 - Lysergic Acid Diethylamide

  • September was labeled as "Mr. X" on Walter's computer in "The End of All Things", the same name that fans used to refer to the man Peter freed in Olivia's mind in "Lysergic Acid Diethylamide". (Image 1, 2)
Connection: Mr. X
Image 1
S3E19 - Lysergic Acid Diethylamide
Mr. X
Connection: Mr. X
Image 2
S4E14 - The End of All Things
Mr. X

S5E11 - The Boy Must Live

  • December (in "The End of All Things"):
    "September has continually intervened on behalf of this boy despite all warnings. He has been given every chance."
    "How shall we proceed?"
    "We wait. He will surface again. And when he does, he will have to face the consequences."

    In "The Boy Must Live" September revealed that he was experimented on by other Observers and was biologically reverted to a purely human state as punishment for his interventions.


S5E13 - An Enemy of Fate

  • September (in "The End of All Things"):
    "We [Observers] are one of countless possible futures for humanity."

    In "An Enemy of Fate" the Fringe team successfully changed the future so that Observers would never be created.