Under the influence of red kryptonite, and living in Metropolis, Clark gets involved with a crime lord named Morgan Edge (Rutger Hauer) who hires him to break into LuthorCorp. Desperate to put his family back together, Jonathan makes a deal with Jor-El (voiced by Terence Stamp) so that he can bring Clark home. Lex is stranded on a deserted island, with the world believing him to be dead. At the mansion, Lionel accuses Helen (Emmanuelle Vaugier), revealed to be alive, of killing Lex.
Jor-El grants Jonathan temporary superpowers, and he and Clark engage in a destructive battle below the LuthorCorp building. Clark, unable to kill his father, destroys the red kryptonite. Lex returns home to the shock of Helen. He quickly learns that Helen attempted to kill him and takes measures to ensure that doesn't happen again. Edge finds Clark and kidnaps him in an effort to make amends to Lionel, but the plan fails and Edge and his henchmen are killed.
Clark discovers Van McNulty (Jesse Metcalfe) has been killing green meteor rock-infected people. When Clark confronts him, the green kryptonite rock Van is carrying stops him. Knowing Clark's weakness, Van manufactures kryptonite bullets and almost kills Clark. Using Lana as bait, Van tries to increase his efforts, but both Lana and Clark prove to be too much for him to handle. Van is later taken to the Belle Reve sanitarium.
A comatose girl, Sarah Conroy (Katharine Isabelle), has the ability to pull Clark into her dreams and does so without warning. Clark and Lana visit her and grow suspicious of her uncle Nicholas (Christopher Shyer) when they learn of Sarah's inheritance that he oversees. They discover the uncle has been drugging her to keep her in a coma with his will appearing in Sarah's dreams as the Traveler (performed by John DeSantis). When Nicholas finds out, he tries to kill Lana, but Clark arrives in time
Clark discovers his abilities are derived from the Sun, when an increase in solar flares cause his powers to either flare up, or give out completely. Perry White (Michael McKean), a once promising journalist, arrives in Smallville in search of stories for a tabloid news show. Despite being constantly inebriated, Perry believes he witnessed Clark using superhuman abilities, and devises a dangerous scheme to expose the truth.
Lana's great uncle Dex McCallum (Tom Heaton), who was convicted of murdering his wife forty years prior, shows her a picture of a drifter he believes really killed her aunt. The drifter looks just like Clark. Positive that the man is Jor-El, Clark's investigation leads him to a Kryptonian medallion that allows him to see moments of the past, and also lets him see how human Jor-El (Welling in a dual role) was when he first came to Earth. It also gives him the knowledge that Dex was framed by his
When Lana starts seeing a new guy named Seth Nelson (Kevin Zegers) and begins acting out of character, Clark investigates. Clark's suspicions are confirmed when he discovers Seth has magnetic powers that can move objects and alter human emotions. When he tries to free Lana from the magnetic hold, she tries to kill Clark. Lex discovers Chloe has been digging into Lionel's past and tries to get her to join him in his fight against his father.
Lex locates Edge (now portrayed by Patrick Bergin) who underwent plastic surgery and gets him to admit that he helped Lionel murder his parents. Before Lex can take it to the authorities, someone tries to kill him. Lex flees and asks Clark for help. Evidence begins to amount that suggests Lex has had a psychotic break. Lex watches Clark slam into Edge's car, after Clark pushes him out of harm's way. Lex's doctors arrive and take him to Belle Reve.
Lex attempts to convince Clark to help him escape, but when Clark refuses, he attempts to escape by himself. His resulting capture forces Lionel to send him in for electroshock therapy to erase his memory. Ian Randall (Jonathan Taylor Thomas), Eric Summers (Shawn Ashmore), and Van band together in an attempt to steal Clark's powers and escape. They get the meteor rocks but Ian betrays Van and kills him with a barbell before Clark arrives. Meanwhile, at the hospital after a near fatal accident ca
Attempting to stop a robbery, Clark is temporarily blinded when he shoots off a burst of heat vision that is reflected back into his eyes by a piece of green kryptonite during a conflict with thieves Walt Masterson (Walt MacDonald) and his sonic-screaming apprentice Nathan Dean (Micah Alberti). He soon realizes that his body has developed super-hearing to compensate for his lack of sight. Pete is kidnapped by Nathan in an attempt to blackmail Judge Abigail Ross into dismissing the charges agains
When Chloe uncovers a secret experiment at Summerholt Institute, someone begins sending mind-controlling emails to her friends with orders to kill her. Clark and Lex discover the person responsible named Molly Griggs (Missy Peregrym), but cannot tie her to Dr. Lawrence Garner (Martin Cummins). Lana decides to rent the apartment above the café to Adam, even though she feels he is hiding something dangerous about his past.
Clark learns his schoolmate Jordan (Joseph Cross) can foresee the future death of anyone he touches. Jordan warns him that Lana is going to die in a fire in the next few days. Clark sets out to prevent Lana's death. Jordan also tells him that he didn't see a death in Clark's future. Chloe, suspicious of Adam, begins investigating him, and uncovers disturbing news.
Pete begins street racing with kryptonite-infused cars where that fuel additive was created by Jason Dante (Ryan Merriman). When he refuses to throw a race, Jason threatens to kill him. Pete asks Clark to use his powers to help him and challenges Jason to a race. When Clark overhears their plan to blow up Pete's car, he tries to stop the race. Meanwhile, Jonathan begins to show the effects of his deal with Jor-El.
When Clark is forced to use his powers in front of another student, Alicia Baker (Sarah Carter), he is surprised to find out she has powers of her own. The two develop a bond through their shared secret, but things change when Alicia becomes obsessive about sharing Clark with anyone else, especially Lana, who, fearing for her own safety, asks Lex to get rid of Adam.
While his father awaits surgery, Clark befriends a teenage boy named Garrett Davis (James Kirk) whose brother Vince (Tahmoh Penikett) just died from liver failure. Everyone is shocked when Vince shows up at the Kents' alive. When his liver starts failing again, Garrett straps a kryptonite bomb to himself and demands that Vince be given Jonathan's liver or he will blow up the building. Clark learns that Lionel has been using a sample of his blood to bring the dead back to life. He tries to stop G
Clark receives a panicked call from Lana and hears a gunshot before the line goes dead, but when he arrives at the Talon he discovers she is alive and well. Clark, Chloe, and Lana realize the phone call came from one day into the future, and that Adam is the one who will shoot Lana. When Lex takes Clark to the LuthorCorp lab where Adam is being kept, he finds all of the staff murdered, and Adam missing. Adam then arrives at the Kent farm and knocks out Chloe and Jonathan and then kidnaps Lana be
Clark begins to suspect that Jor-El is sending Jonathan messages through the key, and that he is the cause for his father's withdrawal from the family. Clark goes down to the caves to confront his biological father. Lionel catches him there and begins putting the pieces together, which leads him to Dr. Virgil Swann (Christopher Reeve). A deal is struck and Lionel's true motives are revealed. Lana gives support and comfort to Clark, which leads to a kiss. Lana talks to Lex about losing faith in C
When Chloe accidentally inhales a mysterious kryptonite-gas, she discovers it acts as a truth serum to anyone who comes in contact with her. She decides to take advantage of her new power by attempting to uncover Clark's secret, but her new power comes with fatal consequences. Clark sets out to find an antidote before Chloe can discover the truth about him, rescuing her just when she is about to die.
Believing that key information about his father's past was lost when his memory was erased, Lex decides to join an experimental program with Garner to regain his memory. Knowing that Lex will discover his secret if he regains his memory, Clark tries to stop him, but is caught by Lionel and Garner so that they can experiment on him. Through the experiment, Clark learns about his birth mother. The experiment on Clark has a negative reaction that puts Garner into a coma.
When a Kawatche Indian, Jeremiah Holdsclaw (Nathaniel Arcand), steals a mythic knife from the caves, he is bestowed with superpowers similar to Clark's. Believing he is the true Naman, he sets out to find and kill Lionel. Lionel attempts to find the knife, while Clark learns that it will crumble if the real Segeth touches it. Clark tries to find Jeremiah before he can kill Lionel.
Emily Eve Dinsmore (Amber Rothwell) has grown-up and is still obsessed with Lana. She escapes from the institute where she is interned and kidnaps Lana. After learning that Lana is leaving Smallville, Clark decides to tell her his secret so they can finally be together. FBI agent Frank Loder (Gary Hudson) kidnaps and tortures Pete to try to force him to reveal Clark's secret, but Lex saves him. Pete then decided to move to Wichita with his mother to protect Clark's secret. Lex panics after the F
A girl (Adrienne Palicki), calling herself Kara and claiming to be from Krypton, emerges from the woods and arrives at the Kents, where she urges Clark to embrace his destiny. Clark turns to his parents for advice, but is shocked when Kara forces Jonathan to finally reveal the deal he made with Jor-El. Clark makes a discovery that leads him to feel badly betrayed by Lex, and his inability to have a relationship with Lana is once more evident as she leaves for Paris. After a talk with Chloe, Jona