The invisible Doctor.
Airdate: February 9, 2009
01/25 - Following a chain of unexpected events, our Heroes are on the run from their latest adversary and one of their own, Nathan Petrelli. After Matt paints a series of prophetic images, the tragic fate of someone close to him is revealed. Elsewhere, Sylar continues his search for his father and encounters a young outcast (guest star Dan Byrd) with information and an ability of his own. Jack Coleman, Ali Larter, James Kyson Lee, Masi Oka, Hayden Panettiere, Sendhil Ramamurthy, Cristine Rose and Milo Ventimiglia also star. Ashley Crow and Ntare Mwine also guest star. Source: NBC