Cyrus Vanch, a nefarious criminal, is recently released from prison and intends to re-secure his position as leader of the underworld. His first step is to take down his biggest…

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

Another attack is made at Hearst’s behest, Harry and Bullock travel to Sturgis for campaigning, and there’s unrest in Langrishe’s troupe.

House and his team are placed under review after a staff member gets hurt.

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…

Katherine recalls the traumatic night in 1490 when she gave birth to a daughter who was immediately taken from her. Meanwhile, Nadia creates a frightening plan to protect her mother;…

With the fate of Mystic Falls at stake, Stefan and Damon must fight their greatest enemy for one last battle.

Katherine recalls the traumatic night in 1490 when she gave birth to a daughter who was immediately taken from her. Meanwhile, Nadia creates a frightening plan to protect her mother;…

While Stefan struggles to come to terms with his past, both he and Damon reveal parts of their history to Elena, until she finally learns the truth about how they…

Isobel returns to town and stuns Alaric with her attitude and her demands that he arrange a meeting with Elena. When mother and daughter finally meet, Isobel refuses to answer…

Founder’s Day has finally arrived, and everyone is busy with last-minute preparations for floats and fireworks. Stefan is uncomfortable with Damon’s new attitude toward Elena, but Elena is more concerned…

While Stefan struggles to control his new situation, Elena and Jeremy are surprised by a visit from their uncle, John Gilbert. Alaric has an awkward talk with Elena about Isobel….

At the Founder’s Day Gala, Elena and Caroline compete for the title of “Miss Mystic Falls” against other girls from town, including Tina Fell and Amber Bradley. Elena is happy…

With the arrival of the full moon, Elena tries to prepare for whatever Klaus has planned and Tyler faces his second transformation. The terrifying events quickly spin out of control,…

The second season begins with Elena discovering her uncle John’s bloody body and learning Jeremy’s fate, and Damon realizing that Katherine has returned. Meanwhile, Caroline is taken to the hospital…

Stefan has his own ideas about Elena’s new plan for the future. While Damon tries to get the truth out of Jules, he asks Elena to keep an eye on…

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…

Stefan and Elena get away for what they hope will be a romantic weekend at the Gilbert family lake house, not realizing that they’ve been followed. Jenna starts to worry…

Stefan tells Elena about a dark time in his history and the surprising person whose influence changed everything. After getting the truth out of Luka, Jonas makes his feelings clear…

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…

(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…

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….

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…

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…

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….

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…

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,…

“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.

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…

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….

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…

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…

The BAU meets their new section chief, Mateo Cruz, who, unbeknownst to them, shares a long work history with JJ. Cruz joins the team as they comb the streets of…

The BAU meets their new section chief, Mateo Cruz, who, unbeknownst to them, shares a long work history with JJ. Cruz joins the team as they comb the streets of…

Meredith works on her relationship with Susan and Thatcher. Cristina has to deal with her mother and Burke’s. Alex continues to tend to Jane Doe/Ava. Meredith and Derek’s relationship has…

Meredith works on her relationship with Susan and Thatcher. Cristina has to deal with her mother and Burke’s. Alex continues to tend to Jane Doe/Ava. Meredith and Derek’s relationship has…

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…