In order to save Will’s life, Sydney and Vaughn must destroy a familiar looking Rambaldi device, while Jack makes a risky deal with Khasinau’s representative, Mr. Sark. Meanwhile, the CIA…

Will’s life is about to change as he is sent to find the person responsible for leaking information to him about SD-6. Meanwhile, Sloane finds himself on the cusp of…

In order to catch Khasinau and get closer to finding her mother, Sydney and Vaughn set up an undercover transaction for a Rambaldi artifact with Khasinau’s representative, Mr. Sark. But…

Vaughn asks Sydney to use her friendship with Sloane’s wife, Emily, to gain access to a mysterious Rambaldi book which happens to be under lock and key in a safe…

Sydney and Dixon are sent to Las Vegas to gather information from a K-Directorate agent who has ties to the group that attacked and nearly destroyed SD-6. Meanwhile, Sydney learns…

Rachel and Sydney have to join forces with Julian Sark to prevent a deadly micropulse bomb from falling in the hands of a dangerous mercenary.

While Nadia is in a coma, Sark is taken into APO and to help them infiltrate Cadmus Revolutionary Front and retrieve the bomb, but in return he demands to see…

Sloane temporarily steps down as Director of his Task Force and gives Jack full authority over the next assignment, which involves Anna Espinosa, Sydney’s old foe. However, Anna turns the…

When a female soldier charges a commanding officer with sexual assault, Lightman is brought to Fort Meade to find out if there’s any truth to the accusation. Meanwhile, the Lightman…

Pete and Myka use H.G. Wells’s time machine to travel back to 1961.

(Crossover episode with CSI: New York, Season 2 Episode 7.) A crossover episode that concludes on “CSI NY” begins with a convicted serial killer who escapes after sabotaging an airplane…

“Pass/Fail” is the fifteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-fourth episode overall. The episode aired on January 18, 2010.

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…

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….

Peter travels to the future and adopts a dangerous ability in order to try to save the world. Meanwhile, Mohinder struggles with his continuing evolution from the formula, and Hiro…

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…

As Jack’s day enters the early morning hours, the nation remains vulnerable, and President Taylor presses on with her international peace process. With the possibility of colossal failure facing CTU,…

President Taylor pressures CTU for progress while Jack’s perilous plan has operatives panicked. As the scope of the looming threat expands, the dynamic at CTU changes and the ongoing crisis…

Despite averting the assassination attempt on foreign peacekeeping leader Omar Hassan, Jack Bauer’s day intensifies when he is forced to go further undercover to secure the unsecured enriched nuclear materials….

Undercover Agent Renee Walker confronts her painful past when attempting to broker a deal with a ruthless, but very well-connected German arms dealer. When CTU shifts its focus from the…

Four explosive hours after being unwillingly drawn back into action, Jack Bauer reteams with a risky Renee Walker to track some very dangerous leads. Meanwhile, back at CTU, a desperate…

While the newly-upgraded CTU is challenged by some unexpected and complicated circumstances, Jack Bauer becomes even more involved in preventing an upcoming assassination attempt on Omar Hassan, a visiting President….

When Daryll’s friend is possessed by the spirit of an innocent killed in a fire in 1899, Phoebe and Drake transport themselves back in time to the caberet where it…

A woman is found dead in a hotel suite with symptoms of the ebola virus. Another woman is found dead with similar symptoms. Catherine and Nick investigate. Sara and Greg…

Mary Margaret, David and Emma embark on a search when Regina and some magic beans go missing; Mr. Gold considers revealing the truth to Lacey; Bae winds up in 19th…

A stranger may be a threat to the true identity of the townspeople; Cora tries to reunite with Regina.

As Regina tries to refrain from using her magic in order to regain Henry’s trust, she starts seeing a ghost from her past; Mary Margaret and Emma find a survivor…

Regina continues to seek a way to regain her powers; David continues his quest to find Mary Margaret and Emma; the seven dwarves discover what happens when one of the…

As fairytale characters awaken from Queen Regina’s curse, they are not transported back to their home; Prince Phillip and his traveling companion realize they will be facing a deadly foe.

With Mary Margaret in labor and due to give birth at any moment, the residents of Storybrooke go on high alert in an attempt to ensure that Zelena doesn’t try…

In New York, Hook tries to make Emma remember by something very powerful: true love. In the Enchanted Forest, Regina, Snow, and Charming all team up to defeat a very…

The race to stop Pan is on as Henry’s life hangs in the balance; with Mr. Gold’s help, Regina decides to adopt a baby.

Tensions in Camelot come to a head when Merlin, now under Arthur’s control, delivers an ultimatum to Emma: hand over the Dark One dagger and the Promethean spark or he…

Emma and Regina team together in order to find a way to save Henry’s life. Meanwhile, in the fairytale land that was, Prince Charming attempts to escape from the Evil…

Mr. Gold attempts to uncover the true identity of August, Emma confronts Regina about her involvement in Kathryn’s disappearance, and David tries to apologize and reconcile with Mary Margaret. Meanwhile,…

After Ruby quits Granny’s diner and with her self-esteem at an all-time low, Emma hires her as an assistant in order to help Ruby discover what it is in life…

David – aka John Doe – must choose between staying with Kathryn or leaving her to be with Mary Margaret, with whom he’s fallen deeply, and inexplicably, in love; and…

At Henry’s urging, Emma convinces Mary Margaret to pay a visit to a comatose John Doe in the hospital and to read to him from the storybook. But Mary Margaret…

Elena and Alaric both lash out at John when Isobel’s unexpected arrival leaves Jenna devastated. Bonnie works with Damon and Jeremy to find the spell they’ll need to harness her…

Johnathan Gilbert’s return to Mystic Falls comes as an unhappy surprise to Elena, Jenna and Damon. Caroline lets Stefan know about her conversation with Tyler, and Stefan does his best…