Return to explore the boundaries of a mysterious mythology that holds millions of viewers in its hypnotic grasp. Season 2 of Fringe contains worlds (and alternate worlds) of excitement complete with shape shifters, cryonic heads, belly-dwelling beasts and people who turn to ashes before our eyes. But the overarching narrative takes three clandestine FBI agents - Olivia Dunham, Peter Bishop and Walter Bishop - through a mind-bending investigation of a parallel reality that threatens to destroy ours.