While Clark seeks out Brainiac to force him to fulfill his side of their bargain and restore Lana, Chloe and Jimmy go up against the government.
Lex goes to the Fortress to fulfill his destiny, while Lana awakens from her coma and Chloe is arrested by the government.
After Lex is attacked by a mysterious stranger, he and Clark both discover the last surviving member of the Veritas group who holds the secret to controlling the Traveler.
When Clark wonders if the world would be better off if he never came to Smallville, Jor-El shows him what life would have been like if he had never existed.
While Clark seeks out Brainiac to force him to fulfill his side of their bargain and restore Lana, Chloe and Jimmy go up against the government.
No one is safe when Lex seeks the secret of Veritas, and Clark tries to stop him.
Clark may have to learn a new superpower as he and Kara join forces to take on Brainiac, putting the lives of their friends in danger.
Clark is kidnapped by a mysterious team of mercenaries, and when Chloe and Lana go to Lionel for help, he expresses his suspicions that Lex is responsible. Chloe and Lana then convince Kara to go with them to the Fortress to ask Jor-El to restore Kara’s memory because she’s the only person who can rescue Clark.
Pete Ross returns to town and finds a number of surprising changes since his departure. Besides resolving his feelings toward Clark since he learned of his friend’s secret, Pete has to deal with the acquisition of a superpower of his own.
Lex tracks the amnesiac Kara to Detroit, where Lois follows him. An obsessive busboy infatuated with Kara shoots Lex, and Chloe has to determine whether to heal him or not.
When Green Arrow’s band of heroes thwarts his efforts once too often, Lex employs a super-powered vigilante to take down the Emerald Archer.
Chloe begins to notice that Clark’s not acting like himself. Bizarro enlists the help of Brainiac.
A mysterious man who claims to be a product of Lex’s latest project plants a bomb on Chloe and uses her to force Lois to get the truth on 33.1 from Lex.
Clark hears his mother’s voice trapped in Kara’s crystal, and releases her. She gives him Jor-El’s ring made of Blue Kryptonite, which strips him of his powers.
Lana absorbs Clark’s powers during a lightning storm, which she uses to break into Lex’s safe and steal some incriminating evidence. After being turned away by Grant at the Daily Planet, who won’t accept her stolen evidence, Lana goes after Lex herself. Clark tries to rescue Lex, but must first battle the super-powered Lana.
Kara goes to Washington to look for her missing crystal, but is captured after she breaks into the lab. She’s interrogated with a memory-revealing serum that has kryptonite in it, which makes her relive a trip to Earth from the past. In this past trip she followed Lara, Clark’s biological mother, to the Kent’s farm.
When a movie is shot in Smallville, Clark is forced to secretly use his powers to save someone from a runaway car… but somebody is looking and becomes Clark’s biggest fan. Meanwhile, Lionel’s fate is revealed.
Dr. Curtis Knox says he can “cure” someone from being a “meteor freak,” changing their lives. Chloe takes an interest in this, but Dr. Knox may have another secret. Meanwhile, Kara makes an alliance with Jimmy while Lana secretly watches Lex.
Kara takes to life in Smallville by entering the Miss Sweet Corn Pageant as a contestant, overruling Clark’s objections. However, Lex takes an interest in her and three of the other contestants discover she has super-powers and decide to use her to steal a valuable time capsule.
Clark and Lois meet Smallville’s newest arrival face-to-face, and she has some surprising news. Clark decides to leave Smallville and continue with his superhero training but Jor-El informs him that a new Kryptonian menace has arisen.
During Clark’s battle with the last Phantom Zone wraith, Lex is rescued by a mysterious woman. Chloe is declared dead in the ER, while Lois goes to Lex’s manor to find out what experiments he was conducting at the dam.
Summary: Rufus and Lily grow suspect of Jenny’s relationship with Damien. Chuck learns more about the woman who may or may not be his mother. Dan and Vanessa struggle through the awkwardness of dating other people.
Summary: When Dr. Alicia Seberg, a government research scientist, is exposed to a deadly toxin while at work and has only hours to live, she calls Patrick Jane and the CBI to find her murderer.
Summary: Auggie and Violet prepare to leave town; when her billionaire boyfriend visits, Amanda puts Ella in charge of a lavish party in his honor; Riley asks Jonah for another chance.
Summary: As Joe and Allison’s wedding is revisted, Allison tries to cope with the increasing strength of her gift.
Summary: A routine estate sale lands Melinda in the center of dark forces battling for the soul of a little girl (”Cassidy”) who’s been trapped in a violently haunted house for years.
Summary: Patty sends Tom out of the country to follow the money trail of the Tobin fraud. Ellen must choose between her new boss and Patty. Leonard Winstone leaves the city under mysterious circumstances.
Summary: it’s St. Patrick’s day, and all of New York City is ablaze with a hundred shades of green — except for an abandoned warehouse in Brooklyn, where two corpses have left a tiny part of the city drenched in red…
Summary: The team investigates the murder of an unpopular receptionist.
Summary: The CSI team investigates the death of a fourteen year old who died under mysterious circumstances…
Summary: A truck driver is kidnapping women and disposing of them in random locations and the BAU must find out his motive in order to catch him.