S3, E8: To prepare for the confrontation ahead, Hiro (Masi Oka) follows respected businessman, husband and father Arthur Petrelli (guest star Robert Forster) in the days before he "died" -- to discover what drove him to create rival company Pinehearst and strike at Angela (Cristine Rose). Later, a moment unfolds where Sylar (Zachary Quinto), horrified and guilt-ridden, might have stopped his murderous pursuit of abilities -- that is, if H.R.G. (Jack Coleman) and Elle (guest star Kristen Bell) had swayed from their monstrous assignment. Finally, under the wing of Company man Thompson (guest star Eric Roberts), agent-in-training Meredith (guest star Jessalyn Gilsig) watches her new life go up in smoke, following the arrival of her hot-headed brother. Greg Grunberg, James Kyson Lee, Ali Larter, Hayden Panettiere, Adrian Pasdar, Sendhil Ramamurthy, Dania Ramirez and Milo Ventimiglia also star. Jimmy Jean-Louis, Malcolm McDowell, Ntare Guma Mbaho Mwine, Ron Perkins, Blake Shields, and Jeff Staron guest star.