The horrifying truth about the murders is revealed. Season finale.
Rattrey is trapped with Dr. Allerdyce in her hospital room, forced to succumb to the plague of wasps, as Yelburton and Sheriff Andersen watch helplessly. Meanwhile, Eric goes out in search of the missing ice drill, and finds Yuri and Max out on the glacier. Yuri, powered by his own greed, decides to fight Eric, leaving him unconscious – but he himself is left helpless when he falls into a cave beneath the ice, into a mammoth's graveyard. Jason finally reveals the location of the mammoth carcass, and the location of Ronnie Morgan's body – but it all seems too late. As Elena succumbs to the virus, Andersen is forced to make a life-changing decision..