Sylar goes to the Company and inadvertently releases 12 super-powered criminals in a fight with Elle. Future Peter tries to fix his mistake. Angela takes over the company. Claire learns more about her powers. Hiro and Ando travel to Paris to track down the speedster who robbed them. Maya discovers that Mohinder's injection has changed him. Matt meats Usutu, an African with a familiar power.

Claire decides to take on one of the villains herself, but she may not be as invulnerable as she believes. Nathan and Tracy search for the truth about their origins. Maya makes a shocking discovery. Hiro and Ando look for help in the most unlikely places.

Villains Knox and Daphne are on a quest to recruit Hiro and others to the Pinehearst fold. Angela and the Company are paralyzed from recent events. Peter goes to Pinehearst searching for answers but is stunned to learn who the founder is. Claire and Sandra go on a mission to save Meredith from the clutches of Doyle, a villain with abilities to control people mentally and physically. Nathan and Tracy try to trace their origins with Mohinder's help.

The eclipse plays havoc with the heroes' powers. Arthur orders Elle and Sylar to bring in Claire. Hiro, Ando, and Matt follow Daphne to her hometown to learn what hold Arthur has on her, and Peter and Nathan travel to the Haitian's hometown to recruit him for the war with Pinehearst.

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 our heroes.

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.

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.

H.R.G. hosts an untraditional Thanksgiving dinner. Elsewhere, the Petrelli family gets a surprise guest at their table. Meanwhile, Samuel continues to hold Hiro hostage, as Lydia goes in search for the truth.

As Claire becomes immersed into the world of the Carnival, she becomes increasingly suspicious of Samuel's motives. Hiro is on a mission to rescue one of his own, but has difficulty communicating his intentions to Ando.

"Let It Bleed" is the thirteenth episode of the fourth season of the NBC science fiction drama series Heroes, the seventy-second episode overall. It is the second episode in a back-to-back series return after the 2009 holiday hiatus. The episode aired on January 4, 2010.

"The Art of Deception" is the sixteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-fifth episode overall. The episode aired on January 25, 2010.

Everyone bands together to try to stop Samuel from taking the lives of thousands. Peter joins forces with his most unexpected ally to save Emma. Meanwhile, H.R.G.'s life hangs in the balance as he and Claire find themselves trapped underground with oxygen quickly running out. Elsewhere, Hiro starts to come to grips with the decisions he has made and is called into action to help stop a disaster.