The teams on both sides fight on for a common cause, and there are shocking developments tied to the Cortexiphan children.
Season 4 Episode 20 of Fringe resulted in a 0.00 rating in the 18-49 demographic.
s04e01 - Neither Here Nor There
s04e02 - One Night in October
s04e03 - Alone in the World
s04e04 - Subject 9
s04e05 - Novation
s04e06 - And Those We Left Behind
s04e07 - Wallflower
s04e08 - Back to Where You've Never Been
s04e09 - Enemy of My Enemy
s04e10 - Forced Perspective
s04e11 - Making Angels
s04e12 - Welcome to Westfield
s04e13 - A Better Human Being
s04e14 - The End of All Things
s04e15 - A Short Story About Love
s04e16 - Nothing As It Seems
s04e17 - Everything In Its Right Place
s04e18 - The Consultant
s04e19 - Letters of Transit
s04e20 - Worlds Apart
s04e21 - Brave New World (1)
s04e22 - Brave New World (2)
Fringe follows the casework of the Fringe Division, a Joint Federal Task Force supported primarily by the Federal Bureau of Investigation, which includes Agent Olivia Dunham; Dr. Walter Bishop, the archetypal mad scientist; and Peter Bishop, Walter's estranged son and jack-of-all-trades. They are supported by Phillip Broyles, the force's director, and Agent Astrid Farnsworth, who assists Walter in laboratory research.
The Fringe Division investigates cases relating to fringe science, ranging from transhumanist experiments gone wrong to the prospect of a destructive technological singularity to a possible collision of two parallel universes. The Fringe Division's work often intersects with advanced biotechnology developed by a company called Massive Dynamic, founded by Walter's former partner, Dr. William Bell and run by their common friend, Nina Sharp. The team is also watched silently by a group of bald, pale men who are called "Observers".