with 55 episodes premiered on July 21, 2006

with 23 episodes premiered on September 25, 2006

A genetics professor. A hospice nurse. A single mom. A street cop. A small town cheerleader. A tormented artist. A computer geek. From places as divergent as Tokyo, India, New York City and Odessa, T… see more

with 11 episodes premiered on September 24, 2007

Season 2 introduces new stories — and new heroes — following the apocalyptic showdown in New York City. Claire has moved with her family to Southern California in order to hide her indestructible abi… see more

with 25 episodes premiered on September 22, 2008

In season 3, a shocking revelation suddenly divides our heroes and, as a cadre of villains is unleashed upon the world, its Heroes are called to their greatest quest yet.

with 19 episodes premiered on September 21, 2009

Season 4 begins with our heroes putting their lives back together. Claire finds that her biggest challenge is forgetting her old life and starting college. Hiro Nakamura goes back to his old life in … see more