smallville season 7: episodes:

7x01: Bizarro:
Clark confronts Bizarro, the last wraith from the Phantom Zone. Their battle causes the dam to break, bringing Kara Kent out of suspended animation. Kara saves Lex, Chloe comes back to life after being pronounced dead, and Lana is alive, hiding in China.

7x02: Kara:
After discovering Kara’s spaceship with Lois, Clark is shocked when Kara tells him she is there to protect baby Kal-El. Lex makes a stunning discovery regarding Lana, and Grant Gabriel hires Lois at the Daily Planet.

7x03: Fierce:
Kara enters the "Miss Sweet Corn" pageant, and meets the competition – Tyler, Carly and Tempest – three meteor-infected vixens who plan to use their powers to steal a treasure map to the hidden Smallville time capsule. Meanwhile, Lana returns.

7x04: Cure:
Dr. Curtis Knox has been treating meteor-infected people and removing their abilities. Chloe makes an appointment to see him, unaware that Dr. Knox has a nefarious plan to kill his patients and harvest their organs. Kara cons Jimmy into helping her locate her crystal, and Lana sets up secret surveillance of Lex.

7x05: Action:
After Clark saves Rachel Davenport, the lead actress in a Warrior Angel film, an obsessed fan decides Clark is a real life superhero, and Lana must be eliminated so Clark can fulfill his destiny. Meanwhile, Lex finds Lionel in a secluded cabin.

7x06: Lara:
While searching for her crystal in Washington DC, Kara is captured by Agent Carter and forced to relive a prior trip to Earth through a series of flashbacks.

7x07: Wrath:
During a lightning storm, Lana absorbs Clark's powers and uses them to wreak havoc on Lex. She steals evidence about Project Scion, a black liquid that appears to be alive. Meanwhile, Lois and Grant begin dating.

7x08: Blue:
Despite Jor-El's warnings, Clark releases Lara from Kara's crystal. Lara gives Clark Jor-El’s blue kryptonite ring, which strips him of his powers, enabling Zor-El to take control of the Fortress of Solitude. Meanwhile, Chloe and Lex each warn Lois and Grant to stop seeing each other.

7x09: Gemini:
Clark and Lana team up to bring Lex down. A man named Adrian Cross plants a bomb on Chloe, which he will detonate if Lois doesn't get Lex to admit the truth about Project Gemini. Chloe gets stuck in an elevator with Jimmy, and romance ensues.

7x10: Persona:
While Clark is frozen in the Fortress, Bizarro takes over his life with Lana, who enjoys the "new Clark". Bizarro enlists the help of Brainiac to help him remain Clark forever, and Lex is stunned at Lionel's reaction after Grant reveals he is a clone of Julian.

7x11: Siren:
Chloe is attacked by the Black Canary, a mysterious woman with a subsonic cry. Under the direction of Lex, the Black Canary launches an attack on the Green Arrow and Clark. Meanwhile, Lois discovers Oliver’s secret.

7x12: Fracture:
Lois follows Lex to Detroit and discovers he has found amnesiac Kara. Obsessive busboy Finley fears Lex will take Kara away, so he shoots Lex and holds Kara and Lois captive. Desperate to find Kara, Clark takes a journey through Lex's mind.

7x13: Hero:
Pete Ross returns to Smallville and unwittingly chews some kryptonite-laced gum, causing him to develop stretching powers. Lex discovers his powers and blackmails him into breaking into Lionel’s safe by threatening to reveal Chloe's secret.

7x14: Traveler:
Lionel hires Pierce to have Clark kidnapped and held in a kryptonite-lined cell. Patricia Swann confronts Lionel about some of his past deeds, Lex has a watchful eye on Kara, and Kara rescues Clark with the help of Chloe and Lana.

7x15: Veritas:
When Kara refuses to let Brainiac take her away, Brainiac takes control of Lana's body. Lex starts to remember Veritas, Lionel has lost all trust of Clark and Chloe, and Lois and Jimmy investigate Patricia Swann's death.

7x16: Descent:
The secret of Veritas leads Lex in a dangerous direction that will put Clark and Lex in each others’ crosshairs. There is a major power struggle and one character dies.

7x17: Sleeper:
Clark searches for Brainiac, as he is the only one who can help Lana. Chloe assists Clark by searching for major power surges, while Jimmy gets caught between Lex and the Department of Security.

7x18: Apocalypse:
Brainiac returns and Clark sees an alternate reality, where it's shown if Clark never crashed onto Earth and where Lex is the president and Chloe is engaged. This alternate reality will become true, however, if Brainiac succeeds.

7x19: Quest:
Lex is attacked by a cloaked stranger who carves Kryptonian symbols into his chest - a message for Clark. Chloe and Clark investigate and discover one member of the Veritas clan has survived and is hiding in a church. Clark and Lex race to be the first to find this mysterious Veritas member, who holds the key to Clark’s survival.

7x20: Artic:
Kara 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’s 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.