The border between the heroes and the villains is getting blurry in the new episode of "Heroes". Betrayal and force are taking over as Mohinder goes from bad to worse. When Nathan and Tracy come to him to learn where their abilities came from, he injects Nathan with an unknown substance to make Nathan pass.
Meanwhile, Hiro and others accept offers to join Pinehearst Industries. After the Company is paralyzed, Peter goes to Pinehearst, its rival, for information. Claire and Sandra try to save Meredith from Doyle, one of the escaped villains.
The episode called "Dying of the Light" will be aired on October 20.
Warning: major spoilers. The villain, Adam will die in this episode and will not return, according to some scoops. Elsewhere, E! hinted that a female hero will die in this season and reports are flying that it would be Maya. Claire later on will also discover why she is different from the rest after Sylar opened up her brain in season 2.