Season 3, Episode 22
A mysterious stranger (Adrianne Palicki) with powers similar to Clark's arrives at the Kent farm and tells the Teen of Steel that she's from Krypton and was sent to bring him home. Elsewhere, Lana says her goodbyes before her trip to Paris; and Lionel, who's locked in a prison cell, prepares for his day in court. Agent Loder: Gary Hudson.
Season 3, Episode 21
Clark decides to reveal his secret to Lana, hoping his show of trust will persuade her not to leave Smallville, but before he can tell her, she is kidnapped by a childhood friend who has developed the ability to pass through objects. Meanwhile, Lionel learns that Lex is working with the FBI. Agent Frank Loder: Gary Hudson. Emily: Amber Rothwell.
Season 3, Episode 20
A Kawatche grad student (Nathaniel Arcand) gets superpowers similar to Clark's when he picks up an ancient knife found in the Indian caves. Elsewhere, Lana and Chloe plan a surprise birthday party for Clark at Lex's mansion; and Lex wants to sell the Talon. Prof. Willowbrook: Gordon Tootoosis.
Season 3, Episode 19
Lex undergoes a series of experimental procedures with Dr. Garner (Martin Cummins) to try and retrieve the memories he lost while he was delusional. Elsewhere, Lana is accepted to art school in Paris, but she has to find a way to pay for it.
Season 3, Episode 18
A chemical accident at the LuthorCorp plant gives Chloe the ability to make people tell her the truth. When Lionel learns of Chloe's new power, he tries to exploit it by forcing her to uncover Clark's secrets.
Season 3, Episode 17
Lionel makes a deal with Dr. Virgil Swann (Christopher Reeve), hoping to uncover the secrets behind the Indian cave drawings. Elsewhere, Jonathan continues to struggle with his own mortality; and Lex works as an informant for the FBI against his will.
Season 3, Episode 16
Clark gets a panicked phone call from Lana in which he hears her being killed. When he finds out the call is from the future, he tries to change the present, hoping to alter fate. Elsewhere, Lex tells his dad he wants to be in charge of the "resurrection serum" project.
Clark befriends a teen (James Kirk) whose brother is mysteriously raised from the dead after succumbing to liver disease. Also: Jonathan learns he must undergo triple-bypass surgery. Vince: Tahmoh Penikett.
Season 3, Episode 14
A student (Sarah Carter) who has the ability to teleport herself---as well as anything she touches---develops a crush on Clark after he reveals his own powers while saving her from an elevator mishap. Elsewhere, Lana learns Adam has been keeping a daily log on her and Clark and threatens to have him evicted.
Season 3, Episode 13
Pete gets in over his head when he gets involved in illegal street racing using Kryptonite-fueled cars; Lana confronts Adam about his mysterious past; and Chloe continues to secretly investigate Adam's background.
Season 3, Episode 12
Clark befriends a teen who has uncontrollable premonitions about the future whenever he comes into contact with other people. Elsewhere, Lana grows more suspicious of Adam after he has a series of violent dreams. Adam: Ian Somerhalder.
Season 3, Episode 11
Clark and Lana unwillingly attack Chloe on separate occasions after being hypnotized by subliminal e-mail messages. In other events, Lana grows suspicious of Adam (Ian Somerhalder) after he reveals his unusually adept martial-arts skills.
Season 3, Episode 10
Clark loses his sight and gains superhuman hearing, which he can't control, when he attempts to stop a jewelry-store robbery involving a teen with a powerful scream. Also, Clark learns that Chloe did research on him for Lionel; Pete is kidnapped.
Season 3, Episode 9
Clark tries to prove Lex's sanity and prevent Lionel from forcing electroshock therapy on his son. Also, Lana meets a mysterious guy (Ian Somerhalder) in the hospital while recovering from her injuries; and Clark runs into former enemies who plan to steal his strength.
Season 3, Episode 8
Lex tells Clark that assassins tried to kill him and that he recently met with the presumed-dead Morgan Edge (Patrick Bergin), but Clark is skeptical of his claims since Lex has been having trouble separating reality from paranoid delusions.
Season 3, Episode 7
Lana's sudden attraction to a teen (Kevin Zegers) with magnetic powers arouses Clark's suspicions that the boy is able to control her mind. Elsewhere, Lex confronts Chloe about her past investigations of his father. Featured is a performance by recording artist Josh Kelley.
Season 3, Episode 6
After Clark sees visions of a 40-year-old murder involving Lana's great-aunt and great-uncle, he begins an investigation into the past that reveals secrets about his Kryptonian family history. Dexter McCallum: Tom Heaton.
Season 3, Episode 5
The future Daily Planet editor-in-chief Perry White (Michael McKean), who's working as a tabloid TV reporter researching meteor phenomena, suspects Clark has super abilities after he's rescued by the teen. Meanwhile, Clark has trouble controlling his powers.
Season 3, Episode 4
Clark has a dream that his new neighbor, whom he hasn't met, is being haunted by a mysterious demon-like figure. Lionel: John Glover.
A teenager is hunting down Smallville residents who were altered by kryptonite rocks, and he inadvertently discovers Clark's abilities when the boy of steel saves Lex from being the hunter's next victim.
Season 3, Episode 2
In the conclusion, crime boss Morgan Edge (Rutger Hauer) tracks down Clark to get the package he took from LuthorCorp. Elsewhere, Lex confronts Helen about what really happened the night his plane crashed. Helen: Emmanuelle Vaugier.
Season 3, Episode 1
Part 1 of two. Clark, who was last seen donning a red-kryptonite ring and fleeing to Metropolis on a motorcycle, faces pressure to return home. Also: Lex's fate is revealed. Morgan Edge: Rutger Hauer.