: While investigating a warehouse linked to Bell, Astrid is shot by a henchman. As Walter tends to her, William Bell himself appears, confirming Walter's suspicion that he is alive. Why It's a "Must-Watch" Episode
In , titled "Brave New World: Part 1," the Fringe team faces a catastrophic event where victims spontaneously combust due to nanotechnology. This episode serves as the first half of a two-part season finale, originally produced to potentially conclude the series. Key Plot Points Watch www xrysoi se Fringe S04E21
: A device planted in a public escalator releases nanites into riders, causing them to ignite if they move. : While investigating a warehouse linked to Bell,
: During a confrontation, Jones discovers he was merely a "bishop" sacrificed in Bell’s larger "chess game". Olivia uses her Cortexiphan powers to telekinetically control Peter’s body, allowing him to defeat Jones, who kemudian disintegrates into ash. This episode serves as the first half of
: Walter realizes the technology is too advanced for current antagonist David Robert Jones and identifies it as the work of his old partner, William Bell .