As an experiment that will recreate the first moment of the origins of the universe, the Big Bang, goes terribly awry, the town’s geniuses turn into morons, leaving the fate…

With the election and New York City’s destruction looming, Nathan has a disturbing face-to-face meeting with the shadowy Linderman. Hiro’s attempt to steal the sword steers him into a grim…

An abandoned research project on invisibility returns to haunt Eureka. Carter and Zoé become tangled in a web of strange occurrences that lead to Carter’s disappearance and the possibility that…

After “helping” Suresh search for more people with special abilities, Sylar’s rampage continues with two “heroes” being confronted by the stronger-powered serial killer. Nathan must factor what he’s learned from…

Sudden muteness, human bioluminescence and faucets running blood cause many of Eureka’s citizens to believe that they are the victims of a biblical plague.

One of the Global Dynamics tanker trucks spills, potentially causing a change in everyone’s sleep habits… In the course of the episode, we come to learn that Global Dynamics has…

Matt enters the private security business and receives an objectionable client. Suresh finds another person on the list. As her home-life worsens, Claire strives to learn more about her birth…

Fargo accidentally triggers a prototype for a personal force field, which goes out of control, forcing Carter to enlist Stark’s help.

Dr. Whiticus creates an incredible “weather machine” intended to reverse the effects of global warming which instead stirs unexpected results.

Matt reveals his abilities to his wife. HRG confers with Mohinder. Now that she knows the truth, Claire tries to make sense of her life. Hiro seeks the sword that…

Carter suffers a blow to the head, and after arguing with Zoe, he suddenly finds himself in a parallel Eureka, where the residents seem to be mysteriously vanishing.

Hiro continues to search for a sword while being chased by mysterious figures. An invisible man named Claude has something to teach one of the heroes. D.L. takes on new…

Falling space debris threatens Eureka residents and Carter turns to high school science fair participants to solve the problem. Specifically, he taps a student science project created to harness the…

Hiro deals with explaining his new heroic path in life to his ambitious sister and tycoon father. Niki has the chance to reunite with D.L and Micah. Claude’s mentoring of…

Taggart’s theory is that solar flares caused by the eclipse, or the ‘Phoenix Effect’, are to blame when people start to spontaneously combust. When Carter discovers that a blast of…

The events of the “missing four months” are explored. Maya and Alejandro must go on the run, it is explained how Peter ended up in Ireland and what happened to…

Mr. Bennet prepares to move his family when he thinks the Company has found them, but Claire doesn’t like the idea. Hiro returns to the present and upon discovering his…

Peter travels to Primatech in Texas to destroy the virus, but not everything is what it seems. Hiro continues the pursuit of his father’s killer, while Matt pursues the last…

In Texas, Peter faces off against former friends due to Adam’s misleading story about the Shanti virus. Micah enlists the help of his mother to rescue Monica. Maya is shocked…

Monica starts to exhibit new abilities while working with Micah, Nana, and Damon. Nana is the grandmother of Micah, Monica, and Damon. They all currently reside in New Orleans. Matt…

A woman named Elle is searching for Peter. Ando looks for Hiro in the past. Matt looks for the man in Molly’s dreams. HRG takes another step in hopes of…

Peter goes on a search. West convinces Claire to stand up to someone. Hiro struggles with his feelings for Yaeko. Suresh has more problems with the Company. HRG tries to…

Peter and Caitlin learn about the endstage effects of the Heroes virus. Many of the Heroes work together to fight the Nightmare Man. West is shocked to the identity of…

Four months after the events of the showdown between Sylar and Peter, new Heroes emerge. These include brother and sister Alejandro and Maya. Hiro remains in the past, but what…

Peter falls in with Irish gangsters who know about his past. Hiro works to contain the damage caused by his journey into the past. Kensei’s power will be revealed. Suresh…

Suresh finds an undiscovered Isaac Mendez painting that shows someone’s death; Maya frees Alejandro from a Mexican jail; in the past Hiro discovers something new about Kensei; and Niki and…

Nora organizes an engagement party for Kitty and Robert. Justin is about to be deployed to Iraq, and he tries to have special time with his family members to say…

Sarah accompanies Kitty to Senator McAllister’s hometown to interview local residents for his upcoming election campaign, where she meets his high school sweetheart Alice. The pair meets up with some…

The Walkers have a family game night and invite Rebecca along for the ride. Kitty also meets Senator McCallister’s gay brother and tries to set him up with Kevin.

Rebecca tells Justin that Joe kissed her. Joe tries to confess to Sarah about the kiss, but before he can get enough courage, she receives the news from the most…

The vineyard opens up and the whole family attends. Holly also makes a move on Mark when Nora is gone.

Kevin acts as McCallister’s attorney when a radio host makes accusations against his war heroism. Also, Tommy and Julia must face a tough decision regarding their newborn babies.

The family throws a party for Nora’s sixtieth birthday. Surprises- but not the good kind- abound when half the family gets the flu, Nora’s mother shows up, and the video…

Nora has a Valentine’s Day dinner with a friend and takes a risky ride that could land her in trouble.

Sarah and Joe go into therapy following the tensions of their marriage. An office poll unsettles Kitty about her relationship with Senator McCallister.Tommy bumps into a concealed member of the…

The Walkers find out about William’s biggest secret: his other daughter with Holly.

Nora invites her late husband’s illegitimate daughter to a family dinner at the Walker house against some of her children’s wishes. Kevin Walker’s hush hush relationship with a movie star…

The Walker family attends Family Day at Justin’s rehab facility.

Kevin meets a new love interest, but isn’t sure about his sexual orientation. Nora and Kitty have been persuaded to use the services of an executive matchmaker with decidedly mixed…

When Kelly attempts to please Jason, take care of her daughter and impress Jason’s parents who visit from out of town, she overworks herself and has a breakdown, Meanwhile, Malik…