S1
S2
S3
S4
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21
E22
E23
E24
E25
8.2
Unaired Premiere Episode
8.1
Chapter One 'Genesis'
8.0
Chapter Two 'Don't Look Back'
8.0
Chapter Three 'One Giant Leap'
8.1
Chapter Four 'Collision'
8.1
Chapter Five 'Hiros'
7.7
Chapter Six 'Better Halves'
7.8
Chapter Seven 'Nothing to Hide'
7.9
Chapter Eight 'Seven Minutes to Midnight'
8.6
Chapter Nine 'Homecoming'
8.3
Chapter Ten 'Six Months Ago'
8.4
Chapter Eleven 'Fallout'
7.9
Chapter Twelve 'Godsend'
7.8
Chapter Thirteen 'The Fix'
8.1
Chapter Fourteen 'Distractions'
7.9
Chapter Fifteen 'Run!'
8.3
Chapter Sixteen 'Unexpected'
8.9
Chapter Seventeen 'Company Man'
8.5
Chapter Eighteen 'Parasite'
8.3
Chapter Nineteen '.07%'
9.0
Chapter Twenty 'Five Years Gone'
8.1
Chapter Twenty-One 'The Hard Part'
8.4
Chapter Twenty-Two 'Landslide'
8.4
Chapter Twenty-Three 'How to Stop an Exploding Man'
7.7
Chapter One 'Four Months Later...'
7.6
Chapter Two 'Lizards'
7.5
Chapter Three 'Kindred'
7.5
Chapter Four 'The Kindness of Strangers'
7.6
Chapter Five 'Fight or Flight'
7.3
Chapter Six 'The Line'
7.8
Chapter Seven 'Out of Time'
8.0
Chapter Eight 'Four Months Ago...'
8.1
Chapter Nine: Cautionary Tales
7.6
Chapter Ten 'Truth & Consequences'
7.9
Chapter Eleven 'Powerless'
7.6
Chapter One 'The Second Coming'
7.5
Chapter Two 'The Butterfly Effect'
7.4
Chapter Three 'One of Us, One of Them'
7.5
Chapter Four 'I Am Become Death'
7.3
Chapter Five 'Angels and Monsters'
7.4
Chapter Six 'Dying of the Light'
7.2
Chapter Seven 'Eris Quod Sum'
7.6
Chapter Eight 'Villains'
7.3
Chapter Nine 'It's Coming'
7.4
Chapter Ten 'The Eclipse Part 1'
7.4
Chapter Eleven 'The Eclipse - Part 2'
7.8
Chapter Twelve 'Our Father'
7.5
Chapter Thirteen 'Dual'
7.6
Chapter One 'A Clear and Present Danger'
7.4
Chapter Two 'Trust and Blood'
7.1
Chapter Three 'Building 26'
7.0
Chapter Four 'Cold Wars'
7.1
Chapter Five 'Exposed'
7.3
Chapter Six 'Shades of Gray'
7.8
Chapter Seven 'Cold Snap'
7.2
Chapter Eight 'Into Asylum'
7.4
Chapter Nine 'Turn and Face the Strange'
7.1
Chapter Ten '1961'
7.4
Chapter Eleven 'I Am Sylar'
7.5
Chapter Twelve 'An Invisible Thread'
7.4
Chapter One 'Orientation/Jump, Push, Fall'
7.2
Chapter Two 'Ink'
7.1
Chapter Three 'Acceptance'
7.4
Chapter Four 'Hysterical Blindness'
7.3
Chapter Five 'Tabula Rasa'
7.1
Chapter Six 'Strange Attractors'
7.5
Chapter Seven 'Once Upon a Time in Texas'
7.4
Chapter Eight 'Shadowboxing'
7.2
Chapter Nine 'Brother's Keeper'
7.2
Chapter Ten 'Thanksgiving'
7.1
Chapter Eleven 'The Fifth Stage'
6.9
Chapter Twelve 'Upon This Rock'
6.8
Chapter Thirteen 'Let It Bleed'
6.9
Chapter Fourteen 'Close to You'
6.8
Chapter Fifteen 'Pass/Fail'
7.2
Chapter Sixteen 'The Art of Deception'
7.4
Chapter Seventeen 'The Wall'
7.6
Chapter Eighteen 'Brave New World'