Olivia drops back into the sensory deprivation tank to purge John Scott’s memories from her mind. Episode 10: "Safe"

Use the 20-episode index provided above as your official table of contents. Start with the "Pilot," pay close attention to "Safe," and hold on tight for the mind-bending finale, "There’s More Than One of Everything."

A strange, metallic cylinder emerges from beneath a construction site.

: It is revealed that Walter’s original son died in 1985; in his grief, Walter crossed into a parallel universe to "save" another version of Peter and bring him back to our world, an act that began tearing the fabric between universes. Season 1 Episode Index

Fringe redefined the sci-fi procedural genre. While often compared to The X-Files , it carved its own identity by focusing deeply on the science behind the fiction and a core emotional story of family, redemption, and identity. The show’s ambitious story arcs and its willingness to take risks, such as committing to a parallel universe storyline, have earned it a devoted cult following.

The strain is traced back to ZFT ( Zerstörung durch Fortschritte der Technologie ), the eco-terrorist group orchestrating the Pattern. 19. Episode 19: "The Road Not Taken"

– Olivia Dunham enlists Peter and Walter Bishop to save her partner/lover, John Scott, after a devastating attack, leading to the creation of the Fringe Division.

Olivia must cross-examine David Robert Jones via a safe-crack transmission to save Loeb, unaware that Loeb is actually working for Jones. 8. Episode 8: "The Equation"

– The critical introduction of "The Observer" (September), a mysterious, bald, eyebrowless man who appears at major historical anomalies.

Electromagnetic frequency interception via the human nervous system.

Walter returns to the mental institution (St. Claire's) to speak with a patient who knows the "equation." Episode 9: "The Dreamscape"

Construction workers find a mysterious, mute child who has lived sealed inside a subterranean, airtight chamber for years.

David Robert Jones attempts to open a portal to another dimension to find William Bell.