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This is Season 2, Episode 13, which comes after the last
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This episode follows Nazi scientist Alfred Hoffman as he specially designed airborne toxins to kill only surrounding people with similar genetic traits, such as people with brown eyes. Adding to the intense lab investigation, Walter uncovers an alarming formula that reveals a link to a branch on the Bishop family tree.
Synopsis provided by the Fandom Wiki, Fringepedia, and Wikipedia.
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Walter's father was involved in the creation of the toxin used in this episode, and the villain was his contemporary.
The Observer can be seen walking outside the cafe when Alfred Hoffman is talking to the mother and daughter inside.
Timestamp: 13:19
A courier in 'What Lies Below' carries a backpack that bears the logo of the "World Tolerance Initiative", foreshadowing Hoffman's planned attack at their 2010 Boston conference in 'The Bishop Revival'.
Timestamp: 00:30
FRINGE DIVISION CASE FILE #213-12810
FRINGE EVENT: Common genetic-trait toxin
CLASSIFIED CASE CONNECTION(S): Josef Mengele's research to create a weapon toxin capable of targeting specific victims
AGENTS ASSIGNED: Dunham
SUPERVISING AGENT: Broyles
FILE ARCHIVED BY: David Balkin, Sheree Sensel
WITNESSES/CONTACTS: Detective Burt Manning, Eliza Staller, Alfred Hoffman (suspect), Edward Markham, Eric Franko
LOCATION: Brookline, MA; Newton, MA
VICTIM(S): 15 wedding guests, 9 coffeehouse patrons
CASE REPORT SUMMARY:
Timestamp: 18:38
Apple
Timestamp: 18:18
Seahorse
Timestamp: 16:22
Snack in the lab
Timestamp: 29:34
Tea
S1E04
Timestamp: 34:46
S2E13
Timestamp: 21:33
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