The FBI teams up with a formerly-institutionalized scientist - who was performing experiments on the fringe of real science - and his son to investigate weird crimes that are seemingly part of a larger pattern, and may be connected with a global company called Massive Dynamics.
Cast: Anna Torv, Joshua Jackson, Lance Reddick, Blair Brown, Jasika Nicole, John Noble, Kirk Acevedo
As the Observers close in, Walter and September desperately work to complete the plan, but one obstacle after another hinders their progress.
As the Observers evaluate Michael and begin to learn of his abilities and potential, Olivia embarks on a dangerous quest to rescue him.
Young Observer's origin is revealed. And his existence and an additional time travel are necessary to change the history of Observers' invasion.
Young observer remains muted. The team seeks Nina Sharp's help to understand him, but the mission is compromised.
Walter Bishop opens Pandora's Box. He finds a young Observer once he has hidden in the Pocket Universe.
Following the bread crumbs, Olivia collects a truck with cargo from a scrap yard but runs into bounty hunters. Peter, with newly gained powers, has to make a decision.
The team retrieves another cassette tape from the amber. With Nina Sharp's help, the team recovers 2 cylinders. While Peter works independently to score a minor victory against the Observers, Olivia ascertains Peter's secret.
A Fringe team member takes on a new role, and Walter follows leads to a key piece needed in the battle against the Observers.
The Fringe team responds to recent devastating events, and a key member makes a pivotal and shocking move.
When the Fringe team tracks a lead into a hostile and heavily guarded location, Phillip Broyles resurfaces…but can he be trusted?
As their battle with the Observers rages on, the Fringe team find themselves in a forest populated by a group of people dedicated to recording the history of mankind.
The fifth and final season continues when the Fringe team revisits the Harvard lab, now under Observer control, to try to find the information they need as the team fights on in their mission to save the world.
The fifth and final season picks up from the ominous events of last season's "Letters of Transit" episode, in which the year is 2036 and the overpowering Observers rule. The Fringe team - preserved in amber for 20 years - is now a rebel resistance team fighting for freedom. Peter, reunited with his now adult daughter, Etta, sets out to find out what happened to his wife and Etta's mom - Olivia - as they start their mission to save the world from the Observers