Sylar meets his father; Claire reluctantly saves Doyle; and Nathan fires Danko, with dangerous results.

Claire finds an unexpected ally in Sandra, while Matt and Peter infiltrate Building 26 in search of Daphne.

Mohinder, Peter and Matt kidnap H.R.G. so they can read his mind and figure out their next step.

Nathan's new boss, Abby Collins doesn't believe in his project, while the mysterious Rebel continues to reach out to save lives.

In the aftermath of the plane crash, the Hunter's tactics sow the seeds of war.

After outing himself to the President, Nathan is charged with rounding up everyone with special abilities in the interest of homeland security.