1x09 Homecoming

Peter, despite warnings pointing to his death, rushes to the aid of the cheerleader, despite being convinced he is powerless alone. Claire's father forbids his daughter to go to Homecoming, fearing that she will be killed. Claire sneaks out, and is attacked by Sylar, but is rescued by Peter, who manages to hold him off before falling, dying and subsequently regenerating. Mohinder decides to continue his father's work.