Fringe

The fate of humanity is on the line as Walter plans to make the ultimate sacrifice to stop the Observers before they were ever created.

To penetrate the Observers' headquarters and rescue Michael, their only hope for victory, Olivia must use her abilities and meet with some old friends.

While Walter tries to learn more about the mysterious Donald after Michael's revelation, Windmark undertakes his own quest for knowledge.

The team joins forces with Nina to recover a key piece of the plan that Walter created to defeat the Observers.

While Olivia and a recently-recovered Peter investigate a mysterious signal coming from a forest, Walter uses LSD to try and recall his memories of his plan to defeat the Observers.

Peter reaps the consequences of spying on an Observer leader. Meanwhile Olivia's search for another tape leads her to a woman who seems to be able to divine the future.

The fight against the Observers intensifies and a Fringe team member plans an attack on his own.

The Fringe team investigates a pocket reality occupying an apartment building, and Peter learns that he has the power to stop the Observers.

Peter takes extreme measures when the team learns of a way to stop the Observers from changing Earth's atmosphere and wiping out humanity.

After infiltrating a subway station to recover a vital piece of Walter's plan, the Fringe team meet up with an old friend... and must determine if he can be trusted.

The Fringe team meets with a group of humans who have taken refuge in the forest and seek to preserve humanity's history any way they can.

After Walter's mind is damaged by Windmark's telepathic probe, the team goes to Walter's old Harvard lab to find the information they need to defeat the Observers.

The Fringe team is pushed to the brink as they try to save every living person from the schemes of Jones' superior.

Walter is forced to relive his past while investigating a series of spontaneous human combustions, while David Robert Jones begins his end game.

The Fringe team on both sides fight a common cause and developments are made regarding the Cortexiphan children.

While David Robert Jones goes after his next target, Walter visits the Other Side to help the team's counterparts with an investigation into a Fringe case that touches on both worlds.

Lincoln teams up with the Other Side and together they investigate a vigilante with a connection to the shapeshifters.

The team investigates a case involving a bizarre mutation that Peter solved in his original timeline four years ago.

Olivia, Peter, and Walter visit the town of Westfield to investigate a report of Fringe activity, and discover that they are trapped.

While Peter and Olivia investigate murders involving an inexplicable toxin, Astrid and her Other Side counterpart meet for the first time.

While the Fringe team tracks down a girl who can predict the future, Olivia tries to cope with the message given to her by the Observers.