Cortexiphan Subject Files

Lore & Background

The Cortexiphan Subject Files were created as part of Walter Bishop's experiments on children years ago. Olivia Dunham was one such child test subject, who was given the nootropic drug Cortexiphan. This gave her powerful psionic abilities. The files document these experiments and their effects. The existence of these records is tied to the Pattern, a series of unexplained occurrences across the Eastern Seaboard, not geographically centered around any single location. The files are classified and kept hidden, but they become crucial evidence for the Fringe Division. Walter Bishop struggles with adjusting to normal life in Peter's care after living seventeen years in a mental institution, and these files represent part of his past. The files are also connected to the activities of a parallel universe, where Walternate, Walter's doppelgänger, studies Olivia's Cortexiphan-induced powers. In Season 4, William Bell uses a device (the 'Bell device') and Olivia's Cortexiphan powers to create a bridge between universes, not a permanent merge. Walter is forced to shoot Olivia to prevent the two universes from being permanently merged and destroyed; Olivia is hospitalized and later recovers, with her Cortexiphan abilities explicitly aiding her healing, as seen in 'Letters of Transit' and later in Season 4.

In Their Own Story

The fluorescent light hummed above the metal desk, casting long shadows over the stack of manila folders. Olivia traced a redacted line with her finger, feeling the texture of the paper like it was skin. She knew what lay beneath the black ink; the dates matched memories she had been told were dreams. The room smelled of stale coffee and ozone, a familiar scent from the Division basement. For years, these files had hidden her truth in plain sight.

Reader's Guide

The Cortexiphan Subject Files are medical and psychological records documenting the long-term effects of the experimental nootropic drug Cortexiphan on pediatric test subjects. Originally created by Walter Bishop, these documents track cognitive enhancements alongside side effects like memory suppression. In-world, they serve as evidence for the Fringe Division to identify individuals connected to the Pattern. Agents access these files to verify a suspect's history or understand anomalous abilities linked to the drug. The information is highly sensitive; possession of unredacted copies often places an individual in danger from shadowy organizations seeking to control the subjects. Over time, copies were scattered across secure facilities and private labs to prevent total destruction of evidence. Ultimately, these files are wielded by those who seek truth or power regarding the Pattern's origins. Walter Bishop uses them to locate his lost creations, while antagonists use them to manipulate former subjects. For investigators like Olivia Dunham, reviewing her own file becomes a pivotal moment in reclaiming her identity and understanding the conspiracy that shaped her life.

Did You Know?

• Olivia Dunham was a child test subject for Walter years ago, for the nootropic drug Cortexiphan.
• Cortexiphan gave Olivia powerful psionic abilities.
• In Season 4, William Bell used a device and Olivia's Cortexiphan powers to create a bridge between universes, not a permanent merge.
• Walter was forced to shoot Olivia to prevent the two universes from being permanently merged and destroyed; Olivia was hospitalized and later recovered, with her Cortexiphan abilities explicitly aiding her healing, as se
• Walternate, Walter's doppelgänger in the parallel universe, studied Olivia's Cortexiphan-induced powers.