Steve McGarret, a decorated Naval officer, returns to Hawaii to investigate his father's murder and is asked to head up an elite police task force.

Sam and Dean meet a witch whose anger over her husband's philandering has proved fatal for the townspeople.

While McGarrett awaits trial for the murder of the governor, he receives an unexpected visit; Kono is suspended.

The man who murdered McGarrett's father resurfaces; Chin Ho's life is put in danger during a hostage situation.

McGarrett experiences what would have happened to the team had they taken a different path when he is kidnapped by Wo Fat.

Ahsoka and Jedi Master Luminara escort captured Viceroy Nute Gunray to trial, where an assassin awaits to free the prisoner.

Danny is abducted and badly wounded by Wo Fat's wife, who is after the cypher Steve's mother left him; Steve finally solves the case his father left for him 10 years ago.

As career week at school has Buffy wondering what her future may have been like, Spike hires three professional bounty hunters to ensure she has no future at all.

Clark discovers that Kara (recurring guest star LAURA VANDERVOORT) sent messages from Krypton in the past that indicate that Brainiac (recurring guest star JAMES MARSTERS) wants to kill baby Kal-El so Clark will not exist in the future. Clark is torn; he thinks the world might be better off if he had never arrived in Smallville. Jor-El arranges for him to see what life would have been like if Clark hadn#t existed: Lex is president of the United States, Kara is raised by the Luthors, Lana is happily married, Chloe and Lois are ace reporters and more.

Zoe asks the Lightman Group to investigate a college football player accused of statutory rape; Loker and Foster try to determine if a religious compound is actually a cult.

When Cordelia breaks up with him on Valentine's Day, Xander has a witch put a love spell on Cordelia so he can in turn break up with her.

After renting Halloween costumes from an unusual shop, Buffy and her friends literally begin turning into whatever costume they are wearing.

Buffy joins forces with a mysterious Slayer named Kendra in hopes of saving Angel from Spike and Drusilla and the deadly ritual they have planned.

Lana enrolls at Metropolis University at the last minute and is forced to join a sorority in order to get housing at such a late date. However, her new sorority sisters offer her more than a place to live after they turn her into a vampire and instruct her to kill Clark. Meanwhile, Chloe applies for an internship at The Daily Planet, but the newspaper's formidable editor, Pauline Kahn (CARRIE FISHER - "Star Wars"), may be more then she can handle.

Kara (recurring guest star LAURA VANDERVOORT) tells Lex he is destined to defeat the Traveler and offers to take him to the Fortress to learn how. Clark is stunned that Kara would go to Lex, but it is revealed that Brainiac is impersonating Kara, and she is actually trapped in the Phantom Zone. Chloe is arrested by the Department of Domestic Security and Lana awakens from her comatose state. Meanwhile, in an epic turn of events, Clark and Lex face off in the Fortress, and Lex learns Clark's secret.

Sunnydale High School is haunted by the ghosts of a former student and teacher who reenact their tragic romance through the bodies of the school's current inhabitants.

Buffy must battle not only The Judge but also Angel, who has lost his soul after experiencing a moment of true happiness.

Buffy is lured into a trap by a group of vampire wannabes who hope Spike will turn them into vampires in exchange for giving him the Slayer.

Angel steps up his torment of Buffy and her friends even as Jenny Calendar searches for a way to restore his soul.

Kara decides to teach Clark how to fly in order to strengthen his chances against Brainiac (recurring guest star JAMES MARSTERS), but Brainiac appears to have the upper hand against the super cousins. And some of Clark's loved ones are caught in the crossfire.