In the season finale, the heroes race to thwart Samuel's vengeful plan to kill thousands of innocent people in Central Park. Volume Six: Brave New World begins.

Claire uncovers the truth about Samuel, while Hiro struggles to get his quest back on track.

Sylar returns to the Carnival unable to kill; H.R.G. tries to forge an alliance with Edgar, while Claire and Peter unite in mourning Nathan's death.

Peter attacks Sylar, determined to bring Nathan back, while Claire and Gretchen tour the Carnival.

Claire courts trouble after the sorority attack; Matt vows to destroy Sylar at any cost; Peter helps Emma start a new life.