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19 Episodes 2009 - 2010
As season four of "Heroes" begins, Claire (Hayden Panettiere) starts her first year of college, though she soon discovers that leaving her old life behind is harder than she thought. Meanwhile, Peter (Milo Ventimiglia) goes back to his paramedic work, and Hiro (Masi Oka) and Ando (James Kyson) have set up a business called "Dial a Hero," though Hiro is troubled about his increasing lack of control over his powers.
Episode 1
Mon, Sep 21, 2009 45 mins
Claire garners unwanted attention at college in the fourth-season premiere. Elsewhere, Hiro and Ando start a "dial-a-hero" business; and Angela worries Nathan will discover his real identity.
Episode 2
Mon, Sep 21, 2009 45 mins
Peter returns to his paramedic job; Hiro fears that he's dying; Samuel, Lydia and Edgar search for others like themselves; Claire's secret is threatened by Gretchen, who saw her fall from a third-story window.
Episode 3
Mon, Sep 28, 2009 45 mins
Peter deals with repercussions from his heroic acts and meets a new woman with abilities (Deanne Bray); Claire deals with the unveiling of her secret; Samuel goes to great lengths to retrieve memories of his brother; and Matt battles inner demons as Sylar reappears.
Episode 4
Mon, Oct 5, 2009 45 mins
Hiro rescues strangers as a means of distraction from his own peril; Angela tentatively guides Nathan through his past; and Tracy decides to make a splash in her efforts to get her job back.
Episode 5
Mon, Oct 12, 2009 45 mins
Samuel prepares to expand his family, but Lydia worries about the repercussions of his actions. Elsewhere, Gretchen surprises Claire with a hidden agenda; Peter connects with a reluctant Emma; and Sylar tries to remember who he was in the past.
Episode 6
Mon, Oct 19, 2009 45 mins
Samuel guides Sylar on his journey of self-discovery; Hiro helps Emma understand the potential impact of her ability; and Peter asks Noah to help him find someone who can heal Hiro. Ernie Hudson guest stars.
Episode 7
Mon, Oct 26, 2009 45 mins
Matt takes a big risk in order to be rid of Sylar; Noah asks Tracy to help a boy who's had similar experiences to Tracy; Claire and Gretchen go through hazing, but they've got other problems facing them.
Episode 8
Mon, Nov 2, 2009 45 mins
Hiro has another chance to save Charlie (Jayma Mays) when he travels three years into the past, where he also encounters Samuel. Elsewhere, Noah's history with his partner (Elisabeth Röhm) is uncovered.
Episode 9
Mon, Nov 9, 2009 45 mins
Claire investigates the sorority attacks, which may have a link to Noah. Elsewhere, Peter finds his job performance improved after gaining a new ability, which also provides a means to help Emma, and Sylar escalates his assault on Matt.
Episode 10
Mon, Nov 16, 2009 45 mins
Samuel sets out to fulfill his potential after discovering his dangerous power. Elsewhere, Tracy has trouble controlling her ability; and Sylar and Matt keep up their battle.
Episode 11
Mon, Nov 23, 2009 45 mins
The Thanksgiving holiday prompts Noah to arrange an unusual gathering, while the Petrellis are caught off guard by a surprise dinner guest. Meanwhile, Hiro is held captive by Samuel as Lydia seeks answers.
Episode 12
Mon, Nov 30, 2009 45 mins
Noah has a surprise run-in with visitors; Samuel makes progress on his plan; Peter goes to extremes to obtain what he wants; and Claire comes to an unexpected destination.
Episode 13
Mon, Jan 4, 2010 45 mins
Claire becomes suspicious of Samuel as she learns more about the Carnival; Hiro launches a rescue mission but has trouble communicating with Ando about it.
Episode 14
Mon, Jan 4, 2010 45 mins
Edgar tries to kill Noah; Peter struggles to accept Nathan's death; and Sylar returns to the Carnival.
Episode 15
Mon, Jan 11, 2010 45 mins
Noah and Matt come up with a plan to take down Samuel using his long-lost love (Kate Vernon), but Samuel has his own plans for the woman. Meanwhile, Hiro and Ando try to save Dr. Suresh; and Peter introduces Emma to his mom, a meeting that leads to bleak visions of the future.
Episode 16
Mon, Jan 18, 2010 45 mins
Hiro grapples with past decisions as his brain tumor worsens; Sylar turns to Claire for answers about why he's changed; and Samuel's attempt to impress Vanessa doesn't go as planned.
Episode 17
Mon, Jan 25, 2010 45 mins
Noah, Lauren and Suresh take action against the Carnival; Sylar turns to Matt for help understanding his longing for a human connection; and Peter cautions Emma about Samuel's true intentions.
Episode 18
Mon, Feb 1, 2010 45 mins
Peter's visions of Emma in peril lead him to try to save Sylar; Samuel tells Claire about her father's past in order to further manipulate her; and Lauren makes a risky move to help bring down Samuel.
Episode 19
Mon, Feb 8, 2010 45 mins
In the Season 4 finale, Peter joins forces with an unlikely ally to rescue Emma. Elsewhere, Noah and Claire fight for survival while trapped underground with depleting oxygen; Hiro reviews his past choices and takes action to stop a catastrophe.