Seasons & episodes
S4 · E17Onyx 8.5 / 10 · 1 published rating 2005-04-13 · 43 min
A black kryptonite explosion splits Lex in two and his evil side - Alexander - is released. Alexander imprisons Lex in the mansion then gives full vent to his evil side - he threatens to evict Lana from the Talon unless she becomes his mate, jousts with Lionel, and tries to kill Clark and Chloe when they figure out his secret.
S4 · E18Spirit 7.8 / 10 · 1 published rating 2005-04-20 · 43 min
On the eve of the Smallville High School Prom, stuck-up candidate for Prom Queen Dawn Stiles is pulled into a coma when she is involved in a car crash into a ravine filled with dozens of chunks of kryptonite. While her body lies in a coma, Dawn finds her spirit allowed to possess the bodies of others, where she can continue her quest to become Prom Queen. As a result, Martha, her body possessed by Dawn, flirts with Clark and asks him to the Prom, Lana attempts to electrocute the ex-boyfriend who dumped Dawn, Lois goes all-out to ensure she and Clark go to Prom together, and Chloe attempts to set fire to the school on Prom night.
S4 · E19Blank 8.2 / 10 · 1 published rating 2005-04-27 · 43 min
When a boy who can make people lose their memories robs the Talon, Clark goes after him but gets total amnesia. Chloe finds out what happened and has to tutor Clark in the use of his superpowers and make sure he doesn't accidentally reveal his secret. While Clark, Chloe, and Lois try to track down Kevin, Clark takes advantage of his "new life" to ask Lana on a date. And Lex tries to turn Clark's memory loss to his advantage by getting him to reveal the secret of the caves.
S4 · E20Ageless 9.1 / 10 · 1 published rating 2005-05-04 · 43 min
Checking out a crater in a cornfield, Clark and Lana discover a baby with no parents and take him back to the Kent farm. However, when the baby, Evan, ages from a newborn to a 7-year-old in less than a day, it becomes clear he is aging at a rapid rate and they turn to Lex for help. Meanwhile, Genevieve suspects Lex has the Chinese Kryptonian artifact and orders Lionel to either recover it...or risk putting Lex in danger of his life.
S4 · E21Forever 8.8 / 10 · 1 published rating 2005-05-11 · 42 min
Clark must stop the school photographer after he sets up a fake high school and uses his ability to petrify people to kidnap students - including Chloe and Lana - to keep the glory days of high school going forever. Meanwhile, Lex and Lionel are kidnapped and tortured by the Teagues in an effort to find the Kryptonian artifact, revealing that...Lana has it.
S4 · E22Commencement 9.3 / 10 · 1 published rating 2005-05-18 · 52 min
After a nightmare, Clark goes to the cave to confront his father Jor-El. Jor-El warns that the crystals have fallen into human hands and have triggered a new meteor shower which will annihilate the Earth unless he reunites the three crystals. Meanwhile, Lex helps Lana, who has apparently commited murder, but then turns against her to get possession of her Kryptonian stone. As disaster looms, Chloe and Lois try to find Lana while Clark attempts to reassemble the stones, and Jason returns to make things unpleasant for the Kents.
S5 · E1Arrival 8.9 / 10 · 1 published rating 2005-09-29 · 42 min
Having been transported to the Fortress of Solitude, Clark is confronted by Jor-El, who tells him he cannot return to Smallville, instead he must stay and prepare to save the planet. Also, transported to the Fortress, Chloe is unable to handle the sub-zero temperature and collapses, begging Clark to use his powers to save her. Jor-El forbids him to leave, but finally acquiesces, telling Clark he must return before sunset or there will be dire consequences. Meanwhile, Lana is horrified when she sees two Kryptonian aliens emerge from a spaceship discovered in the remnants of the meteor shower. The two aliens destroy what's left of the town searching for Kal-El.
S5 · E2Mortal 8.4 / 10 · 1 published rating 2005-10-06 · 41 min
Jor-El strips Clark of his powers, making him human. Delighted to finally be normal, Clark pursues a relationship with Lana sans secrets. However, after Lana, Jonathan and Martha are taken hostage by three thugs, Clark must figure out how to save his family without his super powers.
S5 · E3Hidden 8.2 / 10 · 1 published rating 2005-10-13 · 42 min
A krypto-mutant, Gabriel, hacks into missile codes and prepares to eliminate krypto-mutants in Smallville once and for all. A powerless Clark confronts him and is shot, and only Jor-El can save him.
S5 · E4Aqua 8.6 / 10 · 1 published rating 2005-10-20 · 41 min
At a party at Crater Lake, Lois is saved from drowning by Arthur "A.C." Curry. Arthur has incredible swimming abilities, but also a secret agenda aimed at...Lex. Meanwhile, Professor Fine discussed Lex's weapons-manfucturing operations with Clark.
S5 · E5Thirst 7.8 / 10 · 1 published rating 2005-10-27 · 41 min
Lana joins a sorority to get housing for her last-minute college registration, but the sisters have a deadly agenda which involves turning Lana into a vampire like themselves and sending her against Clark. Meanwhile, Chloe applies to become an intern at the Daily Planet and runs up against the editor-in-chief, Pauline Kahn.
S5 · E6Exposed 8.4 / 10 · 1 published rating 2005-11-03 · 41 min
Jonathan's oldest friend, Senator Jack Jennings, comes to Smallville looking for support in his re-election campaign, but is framed for the murder of his mistress, requiring Lois to go undercover as a stripper.
S5 · E7Splinter 8.8 / 10 · 1 published rating 2005-11-10 · 43 min
Clark gives into paranoid delusions brought on by exposure to new "silver" kryptonite, and Professor Fine is the only one who can save him... before he kills Lana.
S5 · E8Solitude 8.3 / 10 · 1 published rating 2005-11-17 · 41 min
When Martha comes down with a strange disease, Professor Fine convinces Clark that Jor-El is responsible and that the Fortress must be trying to eliminate the father of Kal-El. But Professor Fine has an ulterior motive which comes to fruition when they arrive.
S5 · E9Lexmas 9.4 / 10 · 2 published ratings 2005-12-08 · 42 min
Lex is given an envelope with damaging information that will destroy Jonathan's life and must decide whether he will use it as it will also bring harm to Clark and Martha. Before he can decide what to do, Lex is shot and falls into a coma. He dreams that his mother visits him and shows him the life he could lead if he walks away from his father and LuthorCorp. In this alternate life, Lex is happily married to Lana with a baby on the way. Meanwhile, Chloe asks Clark to use his powers to deliver Christmas presents to needy kids.
S5 · E10Fanatic 8.4 / 10 · 1 published rating 2006-01-12 · 42 min
The Senatorial race between Jonathan and Lex heats up when Jonathan receives an anonymous threat warning him to drop out of the election. When Clark finds Jonathan badly beaten he determines to find the attackers. Lois is thrown into the mix when she is captured and she is forced to assassinate Jonathan during his speech.
S5 · E11Lockdown 8.1 / 10 · 1 published rating 2006-01-19 · 41 min
Lex and Lana are at the mercy of a deranged Smallville deputy who plans to keep them captive until Lex reveals the location of the Kryptonian spaceship. Meanwhile, the Kents can't see eye-to-eye on campaign financing.
S5 · E12Reckoning 10.0 / 10 · 1 published rating 2006-01-26 · 43 min
Clark reveals his secret to Lana, Jonathan and Lex learn the results of the senatorial election, and there is a tragic car accident on the highway that takes the life of someone Clark loves, forcing Clark to appeal to Jor-El for help.
S5 · E13Vengeance 7.8 / 10 · 1 published rating 2006-02-02 · 41 min
Clark discovers that the new assistant at the Daily Planet, a bespectacled, bumbling woman named Andrea, is actually a mysterious female vigilante who stalks Suicide Slum. Her path crosses Clark's as they both seek the same criminal. Meanwhile, Clark's bottled-up grief threatens to get the best of him and LuthorCorp experiences a shakeup.
S5 · E14Tomb 8.4 / 10 · 1 published rating 2006-02-09 · 40 min
Chloe is possessed by the spirit of a young girl whose body is sealed in the Talon's walls, and goes searching for the girl's killer while Clark and Lois try to track her down.
S5 · E15Cyborg 8.7 / 10 · 1 published rating 2006-02-16 · 41 min
Clark finds himself up against Lex when he befriends Victor Stone, a half-machine, half-human subject who escapes from LuthorCorp with the aid of a sympathetic doctor.
S5 · E16Hypnotic 8.4 / 10 · 1 published rating 2006-03-30 · 42 min
Clark is hypnotized by a woman who uses a supposedly magical charm to control others - he reveals his super powers and is sent to kill Lex. Meanwhile, Lex has tracked down the missing Professor Fine and plans to confront him, unaware that Clark is coming to murder him.
S5 · E17Void 8.9 / 10 · 1 published rating 2006-04-06 · 40 min
Distraught over her break-up with Clark, Lana goes to a rogue medical student who experiments with a dangerous kryptonite-based serum that allows people to flat-line but see their dead loved ones. Lana attempts to see her dead parents using the serum and when Clark returns from Honduras to help her, the doctor injects him with the serum and Clark speaks with his dead father...who warns him that Lionel knows his secret. Meanwhile, Lionel continues working to get closer to Martha, and Lex has a near-death vision of his mother.
S5 · E18Fragile 8.6 / 10 · 1 published rating 2006-04-13 · 42 min
Clark befriends a little girl who has the ability to telekinetically shatter glass, then comes to her aid when it's believed she killed her mother in a brutal stabbing attack. Meanwhile Lex and Lana grow closer together and Chloe finds out about it.