Ep 12. Welcome to Westfield

In the twelfth episode of Fringe's fourth season, titled "Welcome to Westfield," Olivia and Peter investigate a mysterious town called Westfield, where the laws of physics appear to be changing. The town's residents are experiencing strange and terrifying phenomena, such as buildings and objects shifting and changing, people's memories being altered, and grotesque mutations in animals and humans.

As Olivia and Peter delve deeper into the mystery, they discover that the entire town is trapped in a time loop, with the same day repeating over and over again. They also learn that a group of scientists had been experimenting with a device that would allow them to manipulate the laws of nature and create a new universe. However, their experiment went horribly wrong, causing the time loop and the bizarre effects on the town.

In order to stop the loop and prevent the destruction of the entire universe, Olivia and Peter must find a way to shut down the device and destroy it. Meanwhile, they must also protect the inhabitants of Westfield, who are gradually losing their minds as the loop continues to repeat.

As the episode progresses, Olivia and Peter's own relationship is put to the test, as they struggle to keep each other focused and grounded amid the chaos and danger. They also face unexpected challenges from their old nemesis, David Robert Jones, who has returned to wreak havoc on their lives once again.

Overall, "Welcome to Westfield" is a thrilling and unsettling episode that pushes the boundaries of science fiction, horror, and psychological drama. With its intricate plot, complex characters, and mind-bending concepts, it is sure to keep audiences on the edge of their seats until the very end.