Sendhil Ramamurthy and Dania Ramírez by Chris Haston/NBC
Heroes returns after nearly 10 months (Monday, Sept. 22 at 9 pm/ET, NBC) with "Volume 3: Villains" - but just who are the good guys and who are the baddies? The season premiere kicks off with future Claire ( Hayden Panettiere) trying to shoot future Peter ( Milo Ventimiglia) to stop him from going back in time and committing a murder. Explosive events at the Company land matriarch Angela Petrelli ( Christine Rose) in a new and powerful position. And Dr. Mohinder Suresh ( Sendhil Ramamurthy) will finally get a superpower of his own - one that sends him down a dark and scary path.

"He injects himself with the serum he developed to cure Maya [ Dania Ramirez] and doesn't know how to control it," reveals Ramamurthy. "It becomes a real Jekyll-and-Hyde thing. I never would have imagined that the genetics professor who's been getting his ass kicked for two seasons would suddenly be the one who's kicking ass."

Or getting laid. Monhinder and Maya will have some extremely steamy encounters this fall - a first for the show. " Heroes is not known for romantic relationships because it would be so lame to have two people kissing and making eyes at each other when the world is at stake. We needed to go all the way in a raw and real way," Ramirez says. "Our show is geared to the young, male audience. I think they're ready for some sex. And," Ramirez adds with a laugh, "who's better than me?" - Michael Logan