Lysergic Acid Diethylamide

The Glyphs

This episode's glyphs spell: F-E-A-R-S

The key to rescuing Olivia from the depths of her mind was to first understand her fears and then for her to face and overcome them.

The Observer

The Observer can be seen at the hospital when Olivia is brought in.

Episode Clues

Previous Episode Clue

A small, cartoon bird is seen in Chinatown when Fauxlivia escapes captivity in 'Bloodline'. Broyles sees this same bird in 'Lysergic Acid Diethylamide' during his LSD trip.

Next Episode Clue

A poster in Olivia's mind in 'Lysergic Acid Diethylamide' that says "Be Vortex Aware" foreshadows the vortex that consumed part of a ranch in '6:02 AM EST'.

Items of Interest

Walter called Astrid 'Astro'.
Astrid called Walter 'Wally'.
Peter wore sunglasses in Olivia's mind to help cover up an allergic reaction Joshua Jackson had that day.
All of the people in Olivia's mind wear blacks and greys because Cortexiphan subjects have a strong desire to blend in. (Image 1)
There's an ad for 'Manhatan Courier', suggesting that part of Olivia's mind still has links to the Redverse. (Image 2)
Olivia doesn't trust Nina.
Bell, Walter, and Peter get animated.
Olivia's mindscape is a mixture of both New York Cities and foreign cities like Paris. There are references to the rollercoaster she rode on Coney Island, Massive Dynamic, Fringe Division's headquarters in the Redverse, Gaudi's hotel from the Redverse, Iraq, and Reiden Lake. (Image 3)
Peter freed Mr. X from inside Olivia's mind. (Image 4)

Item of interest: Blacks and greys — **Image 1**: Blacks and greys
Timestamp: 15:44

Item of interest: Manhatan Courier — **Image 2**: Manhatan Courier
Timestamp: 16:23

Item of interest: Olivia's mindscape — **Image 3**: Olivia's mindscape
Timestamp: 22:54

Item of interest: Mr. X — **Image 4**: Mr. X
Timestamp: 27:14

JJ Abrams Easter Eggs

William Bell pours a glass of MacCutcheon Scotch whiskey after Peter and Walter join him in the World Trade Center, a reference to Lost. (Image 1)

Item of interest: MacCutcheon Scotch whiskey — **Image 1**: MacCutcheon Scotch whiskey
Timestamp: 18:49

Walter's Food

Walter found a chocolate pudding cup in the trash ("Chocolate pudding - my favorite!").

Connection: Chocolate pudding cup — Chocolate pudding cup
Timestamp: 13:13

Names for Astrid

Walter called Astrid 'Astro'.

Notable Quotes

PETER: "Who is this guy? I saw him in your mind. You had him locked up in a zeppelin, he was just flyin' around trapped in there."
OLIVIA: "Yeah, I don't know, I haven't seen him before. But I think that he's the man who's gonna kill me."

Connection Chart

A visualization of all the ways this episode connects to other episodes. Scroll down to see the actual connections.

Episode Connections

S1E01 - Pilot

Olivia's mindscape in 'Lysergic Acid Diethylamide' shows an area with Iraqi architecture, a reference to when Olivia met Peter in Iraq in 'Pilot'.

Connection: Iraqi architecture in Olivia's mindscape — Iraqi architecture in Olivia's mindscape
S3E19 - Lysergic Acid Diethylamide
Timestamp: 22:54

S1E15 - Inner Child

Walter used the same neural halo in 'Lysergic Acid Diethylamide' as he used on the Child in 'Inner Child'.

Connection: Neural halo — Neural halo
S1E15 - Inner Child
Timestamp: 30:33

S2E08 - August

The rollercoaster seen from atop the World Trade Center in Olivia's mind in 'Lysergic Acid Diethylamide' is a reference to the one she rode with Ella in 'August'.

Connection: Rollercoaster — Rollercoaster
S3E19 - Lysergic Acid Diethylamide
Timestamp: 22:57

S2E15 - Peter

In 'Lysergic Acid Diethylamide' Walter fell into a representation of a frozen Reiden Lake just like he really did in 'Peter'.

Connection: Walter falling to Reiden Lake — Walter falling to Reiden Lake
S3E19 - Lysergic Acid Diethylamide
Timestamp: 28:02

S2E16 - Olivia. In the Lab. With the Revolver.

NINA SHARP in 'Olivia. In the Lab. With the Revolver.': "Do you doubt me, Agent Dunham?"
OLIVIA: "I don't know. I've always been a little foggy as to your motives."
In Olivia's mind in 'Lysergic Acid Diethylamide', Nina was outwardly friendly but had murderous intentions when she tried to push Walter down an elevator shaft.

Connection: Nina — Nina
S3E19 - Lysergic Acid Diethylamide
Timestamp: 17:14

S2E19 - Brown Betty

Nina communicated with an animated William Bell in 'Brown Betty'. When Walter and Peter found Bell in Olivia's mind in 'Lysergic Acid Diethylamide' he was animated.

Connection: Animated Bell — Animated Bell
S2E19 - Brown Betty
Timestamp: 25:47

S3E08 - Entrada

BROYLES in 'Lysergic Acid Diethylamide': "I know it followed me."
ASTRID: "What followed you?"
BROYLES: "Death. I saw death. All of it. And it was me."
Broyles saw dead Alt Broyles in 'Entrada' and it had been haunting him.
Olivia saw Brandon as a zombie in her mind in 'Lysergic Acid Diethylamide' because he wanted to cut out and study her brain in 'Entrada'.

Connection: Brandon — Brandon
S3E08 - Entrada
Timestamp: 26:17

Connection: Zombie Brandons — Zombie Brandons
S3E19 - Lysergic Acid Diethylamide
Timestamp: 23:42

Spoilers for future episodes below!

S4E14 - The End of All Things

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'.

Connection: Mr. X — Mr. X
S3E19 - Lysergic Acid Diethylamide
Timestamp: 27:14

S4E21 - Brave New World (Part 1)

The nanites in 'Brave New World (Part 1)' have an "X" on them that matches the "X" on the shirt worn by the man Peter freed from Olivia's mind in 'Lysergic Acid Diethylamide', suggesting that "Mr. X" from Olivia's mind may have been William Bell (who was ultimately behind the nanites).

Connection: Nanites with 'X' — Nanites with 'X'
S4E21 - Brave New World (Part 1)
Timestamp: 17:26