The Second Coming Moments after shots rang out, the shocking identity of Nathan's assassin and the reasons why the Texas press conference had to be cut short are revealed - immediately throwing Peter and Matt into unexpected, uncharted territory. With his powers partially restored, Sylar decides a visit to Claire could give him a boost. Meanwhile, in Tokyo, Hiro and Ando are charged with safeguarding a family secret that could split the planet apart, and discover that the path to a grim future starts with shady speedster, Daphne. In New York City, thanks to Maya, Suresh makes a startling breakthrough that could change the world - or just destroy his. And who is Tracy Strauss?
The Butterfly Effect Angela confronts her much-changed son, Peter, as the bursts of violence around them only hint to the catastrophes to come. First, Sylar declares war on the Company by attacking their main facility, and finds even more than he bargained for on Level 5. During a devastating battle with Elle, a dozen savage criminals - all with terrible abilities - escape. Meanwhile, Claire discovers something new and unexpected about her abilities. Determined to reclaim his family's terrible secret, Hiro and Ando track Daphne to Paris. After a fateful night, Suresh is thrilled to find his research, his life and his relationship with Maya evolving in leaps and bounds. Stuck in unfamiliar territory, Matt finds a guide to help him.
One Of Us, One Of Them When four ruthless, powerful Villains - Knox, Flint, The German and Jesse - bust into a bank and take hostages, Angela sends H.R.G. and his shocking, new empowered partner in after them. Determined to derail a cataclysmic future, Peter must first find what he lost along the way. Meanwhile, Hiro and Ando track Daphne and part of "the formula" to Germany, but run afoul of The Haitian. Horrified by her ability, Tracy Strauss leaves Washington, D.C. to search for answers about Niki. A distraught Claire asks Meredith to teach her how to fight. As his romance with Maya intensifies, Suresh finds himself unprepared when his experiment yields some unexpected results.
I Am Become Death Seeing a future where nearly everyone has abilities, a world destined for destruction, Peter resolves to prevent this earth-shattering end - whatever the cost - and so takes on a dark, unwieldy ability to save the world - gambling that it won't destroy him and everything he loves first. After allowing Angela's half of "the formula" to be stolen, Hiro and Ando set out to uncover the identity of the Villain who hired Daphne and must consult with the person who knows these rogues best, Adam Monroe. After the bloodbath at the bank, H.R.G. resolves to get rid of his new partner. Meanwhile, determined to be a hero, Claire hits the road after one of the Villains from H.R.G.'s old files. Suresh gives in to impulse. Linderman and Molly return in unexpected manners. A new romance ignites between two Heroes.
Angels And Monsters Armed with H.R.G.'s old files and a taser, Claire attempts to take down her first target - Stephen Canfield, a Level 5 escapee with the ability to create black holes - unaware that others are closing in. Meanwhile, in horror, Peter flees from all the death and destruction in the future, only to grimly discover how deeply the experience has changed him. Frustrated that Adam Monroe didn't get them closer to "the formula," Hiro takes a stab at becoming friends with Daphne and new associate Knox, much to Ando's dismay. Later, Suresh's urge to correct research errors puts Maya, among others, in a sticky situation. Linderman advises Nathan to stick by Tracy, seeing that they could accomplish great things together. In Africa, Matt sees his vision of "happily ever after" destroyed.
Dying Of The Light Impressed by his sudden ruthlessness, Villains Knox and Daphne bring Hiro - among others - into the Pinehearst fold, and give him an assignment. With Angela and the Company paralyzed by recent events, Peter goes directly to Pinehearst for answers, and is irrevocably changed by the shocking meeting. Meanwhile, Claire and her mother Sandra attempt to free Meredith from the thrall of escaped Villain Doyle, who has the ability to take mental and physical control of others. Later, Nathan brings Tracy to Suresh, hoping he can shed light on the surprising origin of their abilities.
Eris Quod Sum Trapped and terrified, Nathan and Tracy fight for their lives against a much-changed, monstrous Suresh to free themselves, Maya and the doctor's other "test subjects." Elle returns, with a shock for Claire and her family. Meanwhile, aware of Peter's ruthless take down by her rivals at Pinehearst, Angela reaches out to convince Sylar to save his brother. Since he won't sign up with the Villains, Daphne is ordered by her boss to go back and kill Matt - or be killed herself. While in awe of the African precog's power, Hiro still questions Usutu's advice on how to best face his gathering opponents.
Villains To prepare for the confrontation ahead, Hiro follows respected businessman, husband and father Arthur Petrelli in the days before he "died" - to discover what drove him to create rival company Pinehearst and strike at Angela. Later, a moment unfolds where Sylar, horrified and guilt-ridden, might have stopped his murderous pursuit of abilities - that is, if H.R.G. and Elle had swayed from their monstrous assignment. Finally, under the wing of Company man Thompson, agent-in-training Meredith watches her new life go up in smoke, following the arrival of her hot-headed brother.
It's Coming After a preemptive strike against Hiro and Ando in Africa, Arthur Petrelli orders Knox and Flint to hunt down his son Peter and granddaughter Claire. Nathan is stunned to learn his father is alive - and leading a villainous charge to worldwide destruction. Meanwhile, back at Pinehearst, Sylar has a charged confrontation with Elle. Suresh begins testing his new, combined superpower formula. Later, with the others dead, injured or on the run, Matt attempts to wake Angela.
The Eclipse, Part 1 After reuniting Sylar and Elle, Arthur orders them to find Claire and bring her to him. Matt, Hiro and Ando team up together and follow Daphne to her hometown of Lawrence, Kansas to discover what she's been hiding. Meanwhile, Nathan and Peter Petrelli travel together to Haiti in search of the only man that can stop their father from destroying the world, the Haitian.
The Eclipse, Part 2 The eclipse continues to impact the Heroes' abilities as Elle and Sylar face off against a vengeful H.R.G. while Claire struggles to survive. In Haiti, Peter and Nathan join forces with the Haitian to battle the Haitian's brother, Baron Samedi, and Nathan comes to a shocking decision. In the meantime, Ando, Sam and Frack work hard to get Hiro's memory back with the help of the "9th Wonders" comic books at a local comic bookstore.
Our Father In the aftermath of the showdown against Arthur Petrelli, the Petrelli brothers find themselves battling against one another and Nathan makes a move that will have global repercussions. Meanwhile, Sylar holds Claire, H.R.G., Meredith and Angela hostage at Primatech and a face-off ensues. Elsewhere, Ando, Matt and Daphne continue their attempts rescue Hiro - and Dr. Suresh may be their only hope.
Dual In the aftermath of the showdown against Arthur Petrelli, the Petrelli brothers find themselves battling against one another and Nathan makes a move that will have global repercussions. Meanwhile, Sylar holds Claire, H.R.G., Meredith and Angela hostage at Primatech and a face-off ensues. Elsewhere, Ando, Matt and Daphne continue their attempts rescue Hiro - and Dr. Suresh may be their only hope.
A Clear And Present Danger Months after explosions brought down Pinehurst and Primatech, the Heroes try to put the past behind them and begin new lives. Now powerless, Hiro tries to train a reluctant Ando to be a true superhero. Suresh returns to life as a taxi driver, Peter is back to saving lives, and Daphne and Matt try to live as a normal couple. Claire's attempt to live a regular life is cut short when she uncovers a deadly plot orchestrated by Nathan to track down and capture those with abilities. Meanwhile, Sylar begins the search for his real parents.
Trust And Blood Following a chain of unexpected events, the Heroes are on the run from their latest adversary and one of their own, Nathan Petrelli. After Matt paints a series of prophetic images, the tragic fate of someone close to him is revealed. Elsewhere, Sylar continues his search for his father and encounters a young outcast with information and an ability of his own.
Building 26 Nathan's plans face exposure as Homeland Security begins an investigation under direct orders from the President of the United States. Sylar and Luke embark on a road trip to find Sylar's father, but are secretly being hunted by Nathan's agents. Life gets complicated for the Bennet family as Claire goes into action to protect a young man with abilities from being captured by HRG. Elsewhere, Matt's prophetic images lead Hiro and Ando to India and a mysterious ally comes to the aid of the Heroes.
Cold Wars While being held hostage, HRG is subjected to Matt Parkman's unique brand of interrogation, revealing how he became involved with Nathan's government plot to capture those with abilities. Meanwhile, Matt's discoveries bring Peter face-to-face with "The Hunter".
Exposed After receiving a tip from "Rebel," Matt and Peter race to "Building 26" to rescue Daphne and recover files that will expose the government's plans for those with abilities. Claire finds help from an unlikely source in smuggling Alex out of the city. As Sylar and Luke continue their road trip, Sylar begins to have memories of his father that lead him to the truth about his mother. Meanwhile, "The Hunter" puts his own agenda into action with an explosive surprise for one of the heroes.
Shades Of Gray When Sylar comes face-to-face with his long lost father, the reunion proves to be what he least expected. Elsewhere, after receiving a tip from "Rebel," Claire must decide if she will help her sworn enemy, Eric Doyle, evade capture. Meanwhile, as "The Hunter" plans to uncover the Petrelli family's secrets and take control of Nathan's operation, Matt finds himself in the spotlight and on the verge of leveling Capitol Hill.
Cold Snap HRG convinces Emile Danko, a.k.a. "The Hunter", to release Tracy from "Building 26," in hopes that she will lead them to "Rebel." As Angela evades capture, she turns to an old friend for help. In Los Angeles, Hiro and Ando continue on their latest mission from "Rebel" to protect the newest hero.
Into Asylum Now that Nathan's ability has been revealed and he has lost control of his operation, he and Claire go into hiding in Mexico. With Emile Danko now in control of the government operation, his plan to destroy everyone with abilities is set into motion as he teams up with an unlikely partner. Meanwhile, Angela and Peter seek refuge in a church and begin to mend their broken relationship.
Turn And Face The Strange As Danko spearheads the government operation, someone close to him is put in the line of fire. HRG's life continues to spiral out of control and his marriage is dangerously close to the breaking point. Meanwhile, Hiro and Ando continue their road trip with a special delivery for Matt Parkman). Elsewhere, Angela Petrelli unearths the demons of her past.
1961 As Nathan, Claire, Peter and H.R.G. help Angela uncover her past, she reveals the dark secrets that have haunted her for years. Meanwhile, Mohinder learns of his father's involvement in a long forgotten government operation.
I Am Sylar Sylar continues his unusual partnership and begins to have an unexpected identity crisis. Hiro and Ando take measures toward bringing down Building 26. Meanwhile, Matt's new found fatherhood changes his priorities. Elsewhere, Nathan sets a plan in motion to right the wrongs of his government operation.
An Invisible Thread Nathan faces off against Sylar to keep him from meeting the President. Sylar has his own plans for his new partner. Meanwhile, Hiro learns that there are repercussions to regaining his ability. Elsewhere, Matt is forced to go to extraordinary lengths to protect his future with his family.