Ep 6. And Those We've Left Behind

In this episode of Fringe season 4, titled "And Those We've Left Behind," the team is faced with a complex case involving time travel. When a series of unexplained events start occurring in a quiet neighborhood, the Fringe team is called in to investigate. They quickly discover that a physicist named Raymond Green and his wife Kate are at the center of the disturbance.

Raymond has been working on a project involving a device called a "tempus fugit", which has the ability to manipulate time. However, the device has caused a number of catastrophic events in the neighborhood, including a plane crash and a building collapse. As the Fringe team delves deeper into the case, they realize that the device has caused a time bubble to form around the Green's home. This means that time moves much slower inside the bubble than it does outside.

The team soon meets a scientist named Dr. Dove who has been studying the time bubble for some time. She explains that anyone who enters the bubble will begin to experience time differently, aging at a much slower rate than those outside the bubble. As they investigate further, they discover that Raymond has been using the device to try and save his wife Kate, who has been suffering from a degenerative brain disease. By manipulating time, Raymond has been able to slow down the progression of Kate's disease, but it has come at a cost to the surrounding area.

With time running out, the Fringe team must find a way to stop the device before more damage is done. Meanwhile, Olivia and Peter work on repairing their strained relationship after Olivia's return from the parallel universe. The episode takes on an emotional tone as they work towards solving the case while dealing with their personal issues.

As the team races against time to prevent a catastrophic event, they face challenges that put their skills and abilities to the test. The episode ends with a dramatic conclusion that leaves viewers wanting more, and sets the stage for future episodes of the series.

Overall, "And Those We've Left Behind" is a thought-provoking and emotional episode that showcases the talent of the Fringe cast and crew. The complex storyline, intense action, and deep emotional themes make it a standout episode of the series. It is a must-watch for fans of science fiction and time travel, and a great introduction for those new to the world of Fringe.