Season 2 - Episode 21 "Into the Mystery"

Events in Appalachia are beginning to spin out of control. The Super Mutants are on the move…an army of FEV-enhanced monsters, barreling down upon the unsuspecting factions of the region. For the Colonel, that threat is a dagger, pointing straight at the heart of everything she holds dear. More secrets are revealed…Stein and Sofia stumble upon hidden chapters of the past, while deep in the Mire, Red continues her journey into the unknown…and uncovers more of the region’s terrifying history. And inside Lilith’s lab, her experiments with FEV reveal so much more than she ever expected and a link to her own past. The fight for Appalachia’s future is far from over.