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Fringe, season 4 episode 22 «Brave New World: Part 2»: air date May 11, 2012. Episode overview, season trailer and the cast of Fringe.
Pushed to breaking point, Fringe Division desperately attempts to prevent a catastrophic event orchestrated by David Robert Jones and his hidden associate, Dr. William Bell. Meanwhile, the Observer known as September arrives with a dire warning that will alter the course of humanity's future.