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This is Season 4, Episode 13, which comes after the last
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The science team investigates a patient at a mental hospital who appears to be connected to a series of murders. Olivia channels all of the experiences and feelings her counterpart felt and had for Peter. Nina's involvement in the grand scheme begins to reveal itself.
Synopsis provided by the Fandom Wiki, Fringepedia, and Wikipedia.
The Observer can be seen walking past the cashier's window at the gas station as Peter goes inside to check on Olivia.
Timestamp: 41:50
The "Killer Bees" mascot name on the high school exterior in 'Welcome to Westfield' foreshadows the hive-mind abilities of the villains in 'A Better Human Being'.
Timestamp: 22:19
Timestamp: 42:29
FRINGE DIVISION CASE FILE #413-21712
FRINGE EVENT: Half-siblings connected by telepathic network
CLASSIFIED CASE CONNECTION(S): Recombinant DNA genetic manipulation experiments by Dr. Owen Frank
AGENTS ASSIGNED: Dunham, Lee, Farnsworth
SUPERVISING AGENT: Broyles
FILE ARCHIVED BY: Giovanni Dick
WITNESSES/CONTACTS: Mrs. Keenan (mother)
LOCATION: Deerfield, MA; Douglastown, NY; Back Bay, Boston, MA
VICTIM(S): Sean Keenan, Daniel Greene, Dr. Owen Frank (deceased)
CASE REPORT SUMMARY:
Timestamp: 22:22
Tea
As Olivia continued to regain her memories in "A Better Human Being" she mentioned remembering the events of "Jacksonville".
As Olivia continued to regain her memories in "A Better Human Being" she mentioned remembering the events of "Over There (Part 1)".
As Olivia continued to regain her memories in "A Better Human Being" she mentioned remembering the events of "6B".
As Olivia continued to regain her memories in "A Better Human Being" she mentioned remembering the events of "The Last Sam Weiss".