Redemption
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 Japan, but discovers that he has a terminal illness and sets out to fulfill his own personal bucket-list. Peter Petrelli returns to work as an ordinary New York City EMT. H.R.G. is adjusting to life as a single man, but when Mohinder Suresh offers H.R.G. compelling evidence of a new danger, it makes H.R.G. wonder if he should get back in the game. Nathan Petrelli returns to the Senate and begins to notice strange changes in himself. Matt Parkman returns to life as an ordinary family man, but finds something unfamiliar buried deep within his psyche. And a strange and dangerous carnival comprised of a traveling band of outsiders with powerful abilities suddenly poses a grave challenge.
Episodes
1 Orientation Sep 21, 2009 
2 Jump, Push, Fall Sep 21, 2009 
3 Ink Sep 28, 2009 
4 Acceptance Oct 5, 2009 
5 Hysterical Blindness Oct 12, 2009 
6 Tabula Rasa Oct 19, 2009 
7 Strange Attractors Oct 26, 2009 
8 Once Upon a Time in Texas Nov 2, 2009 
9 Shadowboxing Nov 9, 2009 
10 Brother's Keeper Nov 16, 2009 
11 Thanksgiving Nov 23, 2009 
12 The Fifth Stage Nov 30, 2009 
13 Upon This Rock Jan 4, 2010 
14 Let It Bleed Jan 4, 2010 
15 Close to You Jan 11, 2010 
16 Pass/Fail Jan 18, 2010 
17 The Art of Deception Jan 25, 2010 
18 The Wall Feb 1, 2010 
19 Brave New World Feb 8, 2010