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Looking to watch Fringe Season 4 Episode 21 online? TV Fanatic is your destination for every paid and free streaming option of the Fringe S4E21 full episode from 2 affiliates.

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Episode Details

Fringe Season 4 Episode 21: "Brave New World, Part 1"

Walter must revisit his past this week when a mysterious event threatens the world. It's part one of the season four finale.