Olivia continues to cope with the ominous warning from the Observers, while Peter and the team track a girl with the mysterious ability to predict death.

In an effort to find a way home, Peter journeys to the Other Side to confront Walternate. His venture proves more dangerous than expected. Meanwhile, Olivia receives a dire premonition from an Observer.

While Olivia copes with migraines, she and her team investigate an invisible force which kills its victims and causes the body to turn a ghostly white. As they trace the pattern of deaths, the Fringe team realizes that the force is linked to someone who died of an unknown genetic disorder.

The translucent shapeshifters return to plague Fringe division, and a former Massive Dynamic scientist is involved. Meanwhile, Walter meets with Nina Sharp.

Walter is forced to leave the lab for the first time in years when he and Olivia go to Massive Dynamic to examine files that may connect one of Walter’s Cortexiphan test subjects to a new series of crimes.

As Walter tries to deal with his hallucinations, the Fringe team takes on a case of two 12-year-olds who died under mysterious circumstances after bullying another boy… and their bodies decompose at a remarkable rate of speed.

A television drama centered around a female FBI agent who is forced to work with an institutionalized scientist in order to rationalize a brewing storm of unexplained phenomena.