Season 1 Episode 2
Metamorphosis Clark discovers a classmate has been attacked by mysterious bugs, and has to race to the rescue without revealing his superpowers, while Lex Luthor considers what to do with a mysterious meteor fragment. Tom Welling, Kristin Kreuk and Michael Rosenbaum star

 
Season 1 Episode 3
Hothead Clark joins the football team against his father's wishes, only to discover the coach has been altered by Kryptonite and is using fire-starting abilities to hurt anyone who stands in his way. Meanwhile, Lex strives to snatch control of LuthorCorp from his dad

 
Season 1 Episode 4
X-Ray Clark begins experiencing problems with his eyesight and realises he is gradually developing X-ray vision, while Smallville is terrorised by a series of audacious crimes seemingly carried out by prominent residents - including Lex, who is witnessed robbing a bank. Tom Welling stars as the fledgling superhero

 
Season 1 Episode 5
Cool Lex's matchmaking gives Clark the chance to share a night on the town with Lana, but he ends up facing icy enemy Sean Kelvin, who suffers from a Kryptonite-induced case of permanent hypothermia and has to feed off the body heat of others to survive

 
Season 1 Episode 6
Hourglass Kryptonite rejuvenates an elderly crook, who takes advantage of his new-found youth to avenge himself on the children of jurors who jailed him decades ago. Meanwhile, Clark starts to receive cryptic warnings from a blind woman seemingly able to see into the future - and penetrate his secret identity

 
Season 1 Episode 7
Craving Clark struggles to save Pete from being devoured by a female classmate whose diet of Kryptonite-affected vegetables has left her unable to satisfy her ravenous hunger. Meanwhile, Lex enlists the help of scientist Dr Hamilton to discover the truth about the green meteor fragments scattered throughout Smallville

 
Season 1 Episode 8
Jitters Clark and Lex attempt to rescue high school students taken hostage by a janitor at the LuthorCorp fertiliser plant, who claims his `jitters' were caused by a contaminant and threatens to kill everyone unless he is shown the secret labs where the chemical was developed

 
Season 1 Episode 9
Rogue Clark visits Metropolis, where he is blackmailed by a corrupt policeman who has accidentally discovered his secret and wants to join forces with him, convinced they would make an unbeatable combination. Meanwhile, Lex receives an intriguing proposal from his British ex-girlfriend. Kelly Brook guest stars

 
Season 1 Episode 10
Shimmer Whitney's concern about his father's health causes him to neglect Lana, while Lex is stalked by an unseen enemy who has distilled an invisibility potion from kryptonite-mutated roses, making it difficult for Clark to tackle him. Drama, starring Tom Welling and Kristin Kreuk

 
Season 1 Episode 11
Hug Clark is shocked and suspicious to learn that his father has somehow been persuaded to sell his beloved farm to make way for a pesticide plant - and teams up with a local hermit to try to save the day

 
Season 1 Episode 12
Leech Lightning strikes Clark, mysteriously stripping him of his powers and transferring them to moody fellow student Eric - who promptly goes on a terrifying rampage. Meanwhile, Sir Harry Hardwick and his daughter Victoria almost succeed in buying out LuthorCorp, but find they have been tricked by Lex. Drama, starring Tom Welling

 
Season 1 Episode 13
Kinetic Lex's manor is burgled, but he's forced to hush up the crime because the stolen items include evidence that he is tapped into his father's computer network. Clark eventually learns what's happened and sets out to catch the crooks - but doesn't realise they have kryptonite tattoos. Starring Tom Welling and Michael Rosenbaum

 
Season 1 Episode 14
Zero A mystery stalker terrorises Lex and poisons local livestock with toxic waste to discredit LuthorCorp, while Chloe digs into Clark's background and discovers his adoption by the Kents was not strictly legal. Tom Welling stars

 
Season 1 Episode 15
Nicodemus Clark begins an investigation into the effects of a mysterious flower which is lowering the inhibitions of the town's residents - but as he gets closer to the truth, a deadly secret emerges. With Tom Welling and Kristin Kreuk

 
Season 1 Episode 16
Stray Lex agonises over whether to leave Smallville for good and go to live in Metropolis, while the Kents extend their hospitality to a teenager fleeing his unscrupulous stepfather, little suspecting he can read minds and would have little trouble in discovering Clark's secret

 
Season 1 Episode 17
Reaper A meteor-infected man embarks on a campaign of `mercy killings' and Lionel Luthor gets one of his lackeys to check Lex's financial records. Starring Tom Welling, Michael Rosenbaum and John Glover

 
Season 1 Episode 18
Drone Clark campaigns to be elected class president in another attempt to lead a more normal life, only to discover his main opponent has a bizarre power. Meanwhile, Lex's life becomes a subject of interest to a Metropolis reporter. Tom Welling stars

 
Season 1 Episode 19
Crush Lex's former nanny visits Smallville to check on his progress, while Smallville High's former cartoonist loses the use of his hands in a hit-and-run accident and finds he can move things with his mind - an ability he uses to take a gruesome revenge for his predicament

 
Season 1 Episode 20
Obscura Lex Luthor and reporter Roger Nixon meet a man who was crop-dusting on the day of the meteor storm and claims to have seen a strange craft falling to Earth. Meanwhile, Lana is involved in an accident and develops psychic powers - but the new-found abilities put her in the sights of a deranged kidnapper

 
Season 1 Episode 21
Tempest Part two of two. As a tornado edges closer to the unsuspecting town, a seedy journalist discovers Clark's superhuman abilities and his spaceship hidden at the farm. Lex is distraught to hear his father has closed the plant and ordered his return to Metropolis, while Lana faces a crisis of her own. Starring Tom Welling, Michael Rosenbaum and Kristin Kreuk

 
Season 2 Episode 1
Vortex Clark rescues Lana from the tornado and discovers the storm has activated his spacecraft and deposited it in a cornfield. Jonathan is trapped with an unscrupulous reporter, and Lex wallows in guilt over his father's injuries

 
Season 2 Episode 2
Heat Clark struggles to control his newly developed power of heat vision, while Lex marries schoolteacher Desiree Atkins, a stranger to Smallville who only plans to stay married long enough to bump off her new husband and inherit his fortune. With Tom Welling and Michael Rosenbaum

 
Season 2 Episode 3
Duplicity Pete Ross discovers Clark's spaceship while helping the victim of a rural hit-and-run incident involving Dr Hamilton. Lana struggles to deal with Nell's plans to remarry, while Lex and Lionel adjust to life together. Sci-fi adventure, starring Tom Welling

 
Season 2 Episode 4
Red A mysterious red meteorite causes Clark to become rebellious and start using his powers for evil instead of good. Jonathan and Martha strive to find a reason for his behaviour before he exposes his true identity - though Lana seems impressed by the change. Tom Welling stars as the fledgling superhero

 
Season 2 Episode 5
Nocturne Martha goes to work as Lionel's personal assistant, while Lana pointedly turns a deaf ear to Clark's warnings and befriends mysterious youngster Byron Moore - little suspecting he's actually the product of a sinister experimental programme financed by LuthorCorp. Tom Welling stars

 
Season 2 Episode 6
Redux Clark sets up a reunion between Jonathan and his grandfather. An old photograph reveals that Lana's father could still be alive, and the school gets a new principal. Adventure series, starring Tom Welling, Kristine Kreuk and Michael Rosenbaum

 
Season 2 Episode 7
Lineage A woman claiming to be Clark's biological mother arrives in Smallville, causing conflict between the fledgling superhero and best friend Chloe. The situation rapidly gets out of hand, and he faces the daunting prospect of giving a DNA sample, raising fears that his alien origins will finally be revealed. Blair Brown guest stars

 
Season 2 Episode 8
Ryan Clark tries to protect his friend Ryan from an evil doctor determined to exploit his strange powers, while Aunt Nell announces she's planning to leave Smallville and move to Metropolis, leaving Lana no choice but to go and live with Chloe and her father. Tom Welling and Kristin Kreuk star

 
Season 2 Episode 9
Dichotic Clark tries to warn Lana and Chloe about a student who is surreptitiously dating both of them, but they turn a deaf ear to his words of caution and accuse him of jealousy. Meanwhile, Lex is forced to attend anger management classes. Tom Welling, Kristin Kreuk and Michael Rosenbaum star

 
Season 2 Episode 10
Skinwalker Clark befriends a Native American girl who guesses his secret - but jumps to the wrong conclusion and convinces herself he's the fulfilment of an ancient prophecy, which tells of a being from the sky with amazing powers. Unfortunately, she proves to be leading a double life of her own - which has fatal consequences

 
Season 2 Episode 11
Visage Whitney returns home from the Marines hoping to rekindle his relationship with Lana, but his suspicious behaviour prompts Clark to question his true motives, revealing a shocking truth. Tom Welling and Eric Johnson star

 
Season 2 Episode 12
Insurgence Lex hires crooks to bug his father's office, but they take Lionel and Martha hostage and break into the Luthercorp vault - which contains green kryptonite ingots deadly to Clark, who risks his own safety to stage a rescue. Tom Welling and Kristin Kreuk star

 
Season 2 Episode 13
Suspect Clark battles to overturn seemingly incontrovertible circumstantial evidence and clear his father Jonathan of shooting Lionel Luthor, only to become the target of a mystery assailant who seems determined to ensure the crime remains unsolved. Tom Welling, Kristin Kreuk and Michael Rosenbaum star

 
Season 2 Episode 14
Rush Alien parasites infect Pete and Chloe, transforming them into irresponsible thrill-seekers and feeding on the adrenaline released into their bodies during a series of wild escapades. Clark realises what's happened and tries to help return them to normal - only to end up undergoing an equally strange metamorphosis of his own

 
Season 2 Episode 15
Prodigal Lex rescues his long-lost brother Lucas from the tender mercies of crooks with murder in mind, and brings him to Smallville as a ploy to buy out his father - only to be betrayed at the last minute. Meanwhile, Clark's latest rescue mission costs him a job at the Talon

 
Season 2 Episode 16
Fever Martha inhales green meteor-irradiated spores and promptly lapses into a coma, while Lex learns Helen is considering an out-of-town research job, prompting him to do some serious soul-searching about his feelings for her. With Tom Welling and Emmanuelle Vaugier

 
Season 2 Episode 17
Rosetta Lana moves into the Luthor mansion, while Clark sets out to discover where he came from, visiting New York to meet a brilliant scientist who has a message for him from Krypton. Featuring a guest appearance by Christopher Reeve, who played Superman in the 1978 movie and its three sequels, with Tom Welling, Kristin Kreuk and Michael Rosenbaum

 
Season 2 Episode 18
Visitor Clark investigates the background of a new student who claims to be an alien and offers a display of heat vision as proof, while Helen discovers a mysterious locked room in the Luthor mansion and demands to know what it contains, presenting Lex with a dilemma. Tom Welling stars as the fledgling superhero, with Kristin Kreuk and Michael Rosenbaum

 
Season 2 Episode 19
Precipice An old flame begins to stalk Helen, prompting a concerned Lex to take direct action to stop him in his tracks. Clark also behaves gallantly, but loses control and assaults a fellow student who is threatening Lana, leading to a lawsuit against the Kents that places their farm in jeopardy. Comic-book adventure, starring Tom Welling and Kristin Kreuk

 
Season 2 Episode 20
Witness Clark encounters an audacious teenage robber who inhales Kryptonite fumes from a respirator to give him super-strength. Chloe forms an unholy alliance with Lionel, while Jennifer Small announces she's going to divorce her husband Henry, convinced Lana has replaced her in his affections. Drama, starring Tom Welling, John Schneider and Kristin Kreuk

 
Season 2 Episode 21
Accelerate Lana becomes convinced she is being haunted by the ghost of a dead friend, but doesn't suspect the apparition's true nature - or that it possesses kryptonite-enhanced powers. Meanwhile, Lionel finally gains control of the Indian cave. Comic-strip antics, starring Tom Welling and Kristin Kreuk

 
Season 2 Episode 22
Calling A linguist who was injured while studying the caves comes out of his coma and discovers he possesses amazing powers - which he puts to use by going on a dangerous mission. Lex and Helen begin to have doubts about their forthcoming nuptials and Lionel and Chloe forge a surprise alliance. Tom Welling stars, with Kristin Kreuk and Michael Rosenbaum

 
Season 2 Episode 23
Exodus Clark makes an astonishing discovery about his origins, leaving him facing the choice of a lifetime. Lionel draws closer to solving the mystery of the cave writings, while Lex and Helen's wedding goes ahead - but proves far more dramatic than anticipated

 
Season 3 Episode 1
Exile In the first of a two-part story, Clark gets embroiled in the dodgy dealings of crime lord Morgan Edge as he fails to free himself of the red kryptonite's influence. Jonathan takes drastic action to bring the fledgling superhero home and Lionel accuses Helen of killing Lex. Guest starring Rutger Hauer, with Tom Welling, Kristin Kreuk, Allison Mack and Annette O'Toole. Concludes tomorrow

 
Season 3 Episode 2
Phoenix Part two of two. Jor-El bestows temporary super-powers on Jonathan, who is determined to stop the effects of the red Kryptonite ring. Meanwhile, Lex Luthor returns to America to find out who tried to kill him in the plane crash. Superhero adventures, starring Tom Welling, John Schneider and Michael Rosenbaum

 
Season 3 Episode 3
Extinction Clark uncovers a plot to hunt down everyone affected by the meteor rocks and learns Lex is next on the killer's list. He tries to save his friend, but jeopardises his own life as he unwittingly allows the mysterious assassin to learn of his vulnerability to kryptonite. Comic-book adventure, starring Tom Welling and Michael Rosenbaum

 
Season 3 Episode 4
Slumber Clark is disturbed by frightening dreams of a girl in need of his help, and investigations lead him to believe he is being psychically contacted by a neighbourhood child who fell into a mysterious coma years ago and cannot wake up. Lex faces further family troubles as his ruthless father demands he undergo an in-depth psychological evaluation

 
Season 3 Episode 5
Perry Disgraced journalist Perry White arrives in town in search of evidence of alien encounters and soon becomes suspicious of Clark's abilities. Desperate to get a scoop and save his ailing career, he embarks on an ill-conceived scheme to discover the truth - but jeopardises many lives in the process

 
Season 3 Episode 6
Relic Clark sets out to investigate the death of Lana's great-aunt, who was murdered in the 1960s. As events unfold, he discovers a Kryptonian medallion that allows him to see glimpses of the past and the life that Jor-El put in place for him long before he arrived on Earth. Superhero adventure, starring Tom Welling and Kristin Kreuk

 
Season 3 Episode 7
Magnetic Lana suddenly becomes attracted to a moody fellow student and begins acting so rebelliously that she eventually ends up behind bars - much to the alarm of Clark, who sets about trying to discover the cause of her strange behaviour. Superhero adventures, starring Tom Welling and Kristin Kreuk

 
Season 3 Episode 8
Shattered Lex's claims of an attack at the mansion are dismissed through lack of evidence, leading Lionel to announce he is psychotic and must be institutionalised. Superhero adventures, with Tom Welling, Michael Rosenbaum and Patrick Bergin

 
Season 3 Episode 9
Asylum Lex plots to escape the confines of Belle Reve Sanatorium and prove his sanity, but his plans involve three former Smallville residents who are also out for revenge. Meanwhile, Clark tries to help his institutionalised friend and Lana meets a mysterious stranger in the hospital

 
Season 3 Episode 10
Whisper Clark is temporarily blinded by his own heat vision while trying to stop a robbery, but soon discovers he has developed extraordinarily sensitive hearing to compensate. However, he finds it very difficult to control his new ability. Superhero adventure, starring Tom Welling

 
Season 3 Episode 11
Delete Mysterious e-mail messages prompt Clark and Lana to each make an attempt on Chloe's life, and Lana decides to rent the apartment above the cafe to Adam - even though she feels he is hiding something dangerous about his past. Superhero adventure, starring Tom Welling, Kristin Kreuk and Michael Rosenbaum

 
Season 3 Episode 12
Hereafter Chloe delves into Adam's background and makes a shocking discovery, while a student with precognitive powers alarms Clark by warning that Lana is fated to die in a fire over the next few days. Superhero adventure, starring Tom Welling, Joseph Cross and Ian Somerhalder

 
Season 3 Episode 13
Velocity Clark is torn between keeping his super powers secret and helping a friend whose life is threatened by corrupt street-racing promoters. Meanwhile, Jonathan's deal with the hero's biological father begins to take its toll. Comic-book adventure, starring Tom Welling, Kristin Kreuk and John Schneider

 
Season 3 Episode 14
Obsession Clark is forced to reveal his powers in front of a new girl at school, but it turns out she has special abilities of her own. The two form an attachment through their shared secret - but her possessiveness begins to affect his relationship with Lana. Superhero adventure, with guest stars Sarah Carter and Ian Somerhalder

 
Season 3 Episode 15
Resurrection A distressed youngster straps a Kryptonite bomb to himself and demands his ailing brother be given a life-saving transplant - using Jonathan's liver. Superhero adventures, starring Tom Welling, John Schneider and James Kirk

 
Season 3 Episode 16
Crisis Clark hears a gunshot followed by silence during a phone call from a distressed Lana, but is relieved to find her safe and sound - until a shock revelation puts her back in the firing line. Superhero adventure, starring Tom Welling and Kristin Kreuk

 
Season 3 Episode 17
Legacy Clark attributes Jonathan's strange behaviour to messages he is receiving through the key, and goes down to the caves to confront his biological father. Lionel is led into a confrontation with Dr Swann - and the two end up forming an uneasy alliance. Guest starring Christopher Reeve, with Tom Welling and John Glover

 
Season 3 Episode 18
Truth Chloe accidentally inhales a mysterious kryptonite gas and discovers it acts as a truth serum on anyone who comes into contact with her. Deciding to take advantage, she visits the Kents to find out Clark's secret. Unfortunately, her new power comes with fatal consequences. Adventure, starring Tom Welling, Kristin Kreuk and Allison Mack

 
Season 3 Episode 19
Memoria Lex volunteers to become the subject of an experiment in memory retrieval, hoping to recall the evidence he needs to turn his father over to the FBI - but Clark realises the outcome could jeopardise his own secret. Adventure, starring Tom Welling, Kristin Kreuk and Michael Rosenbaum

 
Season 3 Episode 20
Talisman A Native American visits the caves, where he steals a mystic knife that endows its owner with super powers similar to Clark's - convincing him he is the legendary Naman, a hero enshrined in tribal folklore. Adventure, starring Tom Welling and Kristin Kreuk

 
Season 3 Episode 21
Forsaken Part one of two. Clark resolves to tell Lana his secret, and a rogue FBI agent kidnaps Pete to make him reveal the truth about his super-powered friend. Meanwhile, Lex Luthor receives an ultimatum from the FBI. Gary Hudson guest stars

 
Season 3 Episode 22
Covenant Part two of two. A girl with superpowers who claims to be from Krypton entices Clark to fulfil his destiny, before forcing Jonathan to reveal the deal he made with Jor-El. Lana and Lex find their relationships with the fledgling superhero being taken to another level as events spiral out of control. Adventure, with Tom Welling, Kristin Kreuk and Michael Rosenbaum

 
Season 4 Episode 1
Crusade Clark forges an uneasy friendship with newcomer Lois Lane, who has arrived in town to investigate the apparent murder of her cousin. Starring Tom Welling and Erica Durance, with a guest appearance by Margot Kidder, who played Lois Lane in the 1978 Superman film and its sequels

 
Season 4 Episode 2
Gone Clark suspects Lois's father knows more about Chloe's apparent murder than he is prepared to admit, and his investigation leads him to Lex. Meanwhile, Lionel worries his problems are far from over, and dispatches a mutant killer to track down any witnesses who could testify against him

 
Season 4 Episode 3
Facade A shy schoolgirl with a kryptonite-enhanced appearance discovers that she harms everybody she kisses - and sets her sights on Lana. Michael Ironside guest stars

 
Season 4 Episode 4
Devoted Clark joins the school football team, but is surprised at his fellow players' bizarre behaviour and violent outbursts - until he and Lois discover the cheerleaders are adding kryptonite to their water. Tom Welling and Erica Durance star

 
Season 4 Episode 5
Run The theft of Jonathan's wallet introduces the mysterious Bart Allen, a youngster able to move at super-speed. He unwittingly places Clark's life in danger by robbing Lex and making off with a manuscript containing a hidden map

 
Season 4 Episode 6
Transference Lionel uses a magic stone to trade bodies with Clark, and immediately begins exploiting his new-found superpowers for financial gain - while their rightful possessor languishes behind bars. Tom Welling and John Glover star

 
Season 4 Episode 7
Jinx Clark and Chloe encounter a mysterious foreign exchange student who has the ability to control people's actions, and is using his power to fix the outcome of college football matches. Lex also learns about the newcomer - and tries to turn the situation to his advantage. Starring Tom Welling, Allison Mack and Michael Rosenbaum

 
Season 4 Episode 8
Spell Lana, Lois and Chloe become possessed by three witches who were burned at the stake. Clark sets out to stop the trio wreaking havoc, but they strip him of his powers and force him to reveal the whereabouts of powerful Kryptonian crystals

 
Season 4 Episode 9
Bound Lex catches the eye of an attractive woman at a charity event and ends up taking her back to his apartment, but wakes the next day to find her dead body in his bed - prompting Lionel to ask for Clark's help in proving his son's innocence. Meanwhile, Lana is haunted by a peculiar dream. Jane Seymour guest stars

 
Season 4 Episode 10
Scare One of Lex Luthor's secret experiments goes wrong and releases a deadly toxin into the air over Smallville, causing the town's residents to imagine their greatest fears are being realised. In a bid to find an antidote to the poison, Clark gives some of his blood to Lex, but is shocked by his reaction

 
Season 4 Episode 11
Unsafe Alicia is discharged from Belle Reve psychiatric hospital and returns to Smallville to win Clark back. Despite the obvious advantages of having a relationship with someone who can keep his secret, he fails to return her affection - prompting her to use kryptonite against him. Meanwhile, Lana decides to sleep with Jason in an attempt to rekindle their romance. Sarah Carter guests

 
Season 4 Episode 12
Pariah Genevieve returns to Smallville with a tempting proposition for Lex, and Alicia is suspected of being behind a mysterious attack on Lana and Jason, forcing Clark to take a long, hard look at their relationship

 
Season 4 Episode 13
Recruit Clark befriends a student from Metropolis University who has recently arrived in Smallville - but the murder of a football player leads him to distrust his new acquaintance. To make matters worse, Lois is framed for the crime

 
Season 4 Episode 14
Krypto Lois accidentally hits a dog with her car and takes it to the Kent family farm to heal. Clark notices the injured animal has somehow acquired superpowers, which appear to be connected to LuthorCorp's recent experiments with Kryptonite. Meanwhile, Lana confronts Jason about his role in his mother's schemes

 
Season 4 Episode 15
Sacred Clark learns Jason and Lex have secretly gone to China in search of a mysterious Kryptonian crystal, so he and Lana attempt to get there first. However, a sudden appearance by Isabelle the witch causes complications

 
Season 4 Episode 16
Lucy Lois's younger sister Lucy arrives in Smallville unannounced, and immediately begins wheedling her way into people's good books. However, it isn't long before Clark catches her stealing money from a bar, and demands to know the real reason for her surprise appearance. Starring Tom Welling, Erica Durance and Peyton List

 
Season 4 Episode 17
Onyx Lex is imprisoned in the mansion by his own evil double, who later threatens to evict Lana from the Talon unless she becomes his partner - then jousts with Lionel, before trying to kill Clark and Chloe

 
Season 4 Episode 18
Spirit Chloe's prom-queen rival Dawn Stiles crashes her car into a ravine studded with kryptonite - which allows her spirit to roam free and cause mischief. It leaps into the bodies of Martha, Lana and Lois as it seeks revenge on an ex-boyfriend, asks Clark to the dance - and attempts to blow up the school for good measure

 
Season 4 Episode 19
Blank A boy unleashes his special powers on Clark, giving him total amnesia, and as he struggles to find his feet, Chloe has to ensure he does not reveal his true abilities to the world. To make matters worse, Lex is not slow to realise what has happened, and tries to use the situation to his own advantage

 
Season 4 Episode 20
Ageless Clark and Lana discover an abandoned baby and take him home to the Kent farm, where he matures from a newborn to a seven-year-old in a matter of days. Realising he will be dead of old age in a matter of weeks unless his development can be halted, they set out to find a cure before it is too late. Meanwhile, Genevieve orders Lionel to recover the Chinese Kryptonian artefact. Jane Seymour guest stars

 
Season 4 Episode 21
Forever Clark investigates a spate of disappearances among pupils from the high school, and discovers a photographer has kidnapped them in an insane attempt to relive his youth. Meanwhile, the Teagues torture Lex and Lionel for information on the location of the crystal

 
Season 4 Episode 22
Commencement Clark experiences a prophetic nightmare of death and destruction, and decides to seek answers from Jor-El, who reveals the Kryptonian artefacts have triggered a meteor shower heading toward Earth. He commands the superhero to find and reassemble the three crystals immediately to prevent a disaster of epic proportions

 
Season 5 Episode 1
Arrival Clark is transported to the Fortress of Solitude, where his biological father Jor-El warns him of an imminent threat to the planet. He is faced with the dilemma of beginning a new course of training, or preventing Chloe from freezing to death. Meanwhile, two Kryptonian aliens appear in Smallville and set about wreaking havoc

 
Season 5 Episode 2
Mortal The fledgling superhero is stripped of his powers, allowing him to lead a normal life and pursue a relationship with Lana. Unfortunately, it is not long before she, Jonathan and Martha are taken hostage by a trio of thugs, leaving Clark struggling to save them. Tom Welling stars

 
Season 5 Episode 3
Hidden A former high-school student causes havoc, entering a missile launch facility and trying to blow up the town. A still-powerless Clark helps Chloe formulate a plan to stop the madman - which results in the fledgling superhero being shot and critically wounded. It is up to Jor-El to save his son, but his aid comes at a high price. Starring Tom Welling and Allison Mack

 
Season 5 Episode 4
Aqua Lois has an accident during a beach party at Crater Lake, and Clark races to save her - but another boy with incredible swimming ability beats him to it. Professor Fine drops a series of hints suggesting Lex is behind a covert weapons manufacturing operation. Starring Tom Welling and Erica Durance, with James Marsters

 
Season 5 Episode 5
Thirst Lana enrols at Metropolis University and finds accommodation with a group of sorority girls. Chloe meets the Daily Planet's fearsome new editor-in-chief, who sets her a challenge to earn an internship at the newspaper. Guest starring Carrie Fisher

 
Season 5 Episode 6
Exposed One of Jonathan's friends arrives at the Kent farm, looking for support in his campaign to be re-elected to the Senate. However, the murder of his mistress puts him under police scrutiny, prompting Lois to go undercover in a bid to prove his innocence

 
Season 5 Episode 7
Splinter Lana receives a mysterious package containing a piece of silver kryptonite, which Clark pricks his finger on. As a result, he begins to suffer paranoid delusions and grows convinced someone is out to get him. Professor Fine is the only one who can save him - but things are not as they seem. Tom Welling and James Marsters star

 
Season 5 Episode 8
Solitude Martha is struck down by a mysterious energy bolt and develops peculiar symptoms as a result. Professor Fine convinces Clark that Jor-El is to blame and claims the Fortress of Solitude must be destroyed - but he has a sinister motive. Annette O'Toole and James Marsters star

 
Season 5 Episode 9
Lexmas Lex is shot by a gang of thugs and ends up in hospital, where his mother visits him in a dream and shows him how things could be if he moved away from his father's influence. Meanwhile, Lionel agonises over whether to let the doctors carry out a risky operation, and Clark helps Chloe deliver Christmas presents to underprivileged children

 
Season 5 Episode 10
Fanatic The senatorial race turns nasty as Jonathan receives an anonymous message telling him to drop out - and is later found hanging upside down in the barn. Lois is confronted by a woman who appears to be supporting Lex's campaign - and will go to any lengths to make sure the opposition does not get ahead. Starring Tom Welling and John Schneider

 
Season 5 Episode 11
Lockdown Lex is trapped in his manor by a couple of phoney cops, who will stop at nothing to find out the location of the Kryptonian spaceship - even if it means taking Lana prisoner. Lois is forced to tell Jonathan where the extra campaign funds are coming from, and Martha advises Clark to be more trusting in his relationships. Starring Tom Welling and John Schneider

 
Season 5 Episode 12
Reckoning Clark transports Lana to the Fortress, where he reveals his secret and explains why he hid it from her for so long - before asking her to marry him. Jonathan and Lex learn the outcome of the senatorial race, which indirectly results in a shocking tragedy on the highway. Tom Welling stars

 
Season 5 Episode 13
Vengeance Clark and Chloe hatch a plan to discover the identity of a vigilante stalking the streets of Metropolis - and discover the crimefighter is someone closer to them than they thought. Lionel considers a takeover bid for LuthorCorp

 
Season 5 Episode 14
Tomb Chloe is plagued by visions of a girl in distress, but her psychiatrist is convinced she is hallucinating. While investigating with Clark, she discovers the skeleton of the youngster - whose spirit mysteriously passes into her body. Meanwhile, Lois is abducted from her flat. Allison Mack stars, with Tom Welling and Erica Durance

 
Season 5 Episode 15
Cyborg An experimental cyborg escapes from LuthorCorp and accidentally puts Lana in hospital. Clark confronts the robot, and discovers he's a former football player everyone thought had died in a car crash - including his old girlfriend. Meanwhile, Martha discovers that someone else knows about the explosion at Lex's warehouse - and is using the knowledge to blackmail her. Tom Welling stars

 
Season 5 Episode 16
Hypnotic Clark becomes enchanted by a beautiful seductress who uses her magical powers to manipulate minds. She orders him to kill Lex, but he must first track down his target, who is on his way to confront Professor Fine in Honduras

 
Season 5 Episode 17
Void Lana visits a maverick medical student and asks to be injected with a kryptonite-based serum which makes subjects flatline, but allows them to see dead relatives. Arriving to rescue her, Clark is also injected - leading to an encounter with Jonathan, who issues him a warning

 
Season 5 Episode 18
Fragile Clark befriends an orphan girl whose telekinetic powers have made her the prime suspect in the fatal stabbing of her foster mother. Meanwhile, Lex and Lana grow closer - much to Chloe's dismay. Series star Tom Welling directs this episode

 
Season 5 Episode 19
Mercy Lionel is taken prisoner by a masked villain who forces him to play elaborate games for the ultimate prize - staying alive. Unfortunately for Clark, Martha picks the wrong time to call at the Luthor house, and also finds herself at the mystery man's mercy

 
Season 5 Episode 20
Fade Clark unwittingly saves the life of a hit-man, who is understandably overwhelmed with gratitude. Revealing a hidden ability to become invisible, he returns the favour by setting out to kill Lex. Tom Welling stars, with Alexander Scarlis and Michael Rosenbaum

 
Season 5 Episode 21
Oracle Clark is visited at the graveyard by Jonathan's ghost, who warns him he must kill Lionel to save the planet. Meanwhile, Lex creates a vaccine for Fine's lethal virus. Tom Welling stars, with John Schneider, James Marsters and John Glover

 
Season 5 Episode 22
Vessel Fine releases a lethal virus, demanding that Clark free General Zod in exchange for the antidote. Lionel channels Jor-El to advise on how the menace can be defeated, and Lex awakens with surprising new powers. Tom Welling, with James Marsters and Michael Rosenbaum star

 
Season 6 Episode 1
Zod New series. Clark is thrown into a Kryptonian prison created by Jor-El and finds himself stripped of his powers and surrounded by criminals seeking revenge. Meanwhile, Zod takes over Lex's body, and begins putting his plans to conquer Earth into action

 
Season 6 Episode 2
Sneeze Clark comes down with a cold and discovers it has given him an unpredictable and potentially dangerous ability. Meanwhile, Lois gets a new job and Lex tries to discover why he's being followed by a mystery man

 
Season 6 Episode 3
Wither Clark and Chloe track a plant-based creature that uses male humans to reproduce and has chosen Jimmy Olsen as its next target. Oliver Queen asks a reluctant Lois to accompany him to a charity ball held by Lex. Drama, starring Allison Mack and Tom Welling

 
Season 6 Episode 4
Arrow A mysterious figure calling himself the Green Arrow steals a necklace from Martha, so Lois and Clark set out to discover the thief's identity and track him down. Lex continues his investigation into the mysterious black box, while Lionel warns Lana about his son

 
Season 6 Episode 5
Reunion Lex joins Oliver Queen at a school reunion, where their former acquaintances begin dying in mysterious circumstances. Clark discovers he may not have been alone when he left the Phantom Zone. Drama, starring Tom Welling, with Michael Rosenbaum and Justin Hartley

 
Season 6 Episode 6
Fallout Raya arrives in Smallville to visit Clark and reveals how to repair the Fortress of Solitude. Unbeknown to them, however, the recently freed Baern is on the warpath, bent on exacting revenge for his time in the Phantom Zone. Drama, starring Tom Welling and Pascale Hutton, with rapper Bow Wow

 
Season 6 Episode 7
Rage Chloe and Clark try to discover why the Green Arrow has begun acting strangely, and learn he is experiencing strange side-effects from a drug intended to make him invincible. Meanwhile, Lana has second thoughts about her relationship with Lex. Drama, starring Tom Welling, Allison Mack and Justin Hartley

 
Season 6 Episode 8
Static An escapee from the Phantom Zone surfaces in Seattle, where he announces his presence by killing a cargo ship's crew. Meanwhile, a patient at LuthorCorp Labs breaks out and exacts revenge on Lex by trapping him in a dimension where he is able to see and hear those around him, but cannot make them aware of his presence

 
Season 6 Episode 9
Subterranean An illegal immigrant seeks help to escape from a farm where he's working, revealing that the site holds a sinister secret. Learning that previous would-be escapees have vanished during their attempts, Clark agrees to investigate, but is given just 24 hours before Martha keeps her promise to inform the police

 
Season 6 Episode 10
Hydro A Daily Planet gossip columnist uses her hidden power to eavesdrop on a conversation between Lana and Chloe, and publishes a transcript of what she hears - including Lana's doubts about marrying Lex. While Chloe investigates the reporter, Lois asks for Clark's help to learn more about the mysterious Green Arrow, whom she suspects may be a heavily disguised Oliver Queen

 
Season 6 Episode 11
Justice Lex's Level 33.1 project comes to fruition, causing Oliver Queen to take urgent action and unite Clark's super-powered allies Arthur Curry, Bart Allen and Victor Stone as a single crime-fighting team. Drama, starring Tom Welling, with Alan Ritchson, Kyle Gallner, and Lee Thompson Young

 
Season 6 Episode 12
Labyrinth Clark wakes up in a psychiatric hospital, where the doctors try to convince him his life as a Kryptonian is actually part of a schizophrenic delusion. While refusing to believe the story put to him, he can't find any evidence to disprove it - until a mysterious patient helps point the way. Tom Welling stars, with Phil Morris and Kristin Kreuk

 
Season 6 Episode 13
Crimson Exposure to red kryptonite robs Clark of his inhibitions, turning him into a veritable Lothario who goes around kissing any woman who catches his eye and blurting out indiscreet remarks about his friends relationships. Tom Welling stars, with Kristin Kreuk and Erica Durance

 
Season 6 Episode 14
Trespass Lana discovers she has a stalker, which leads her to a surprising hideout. Jimmy breaks up with Chloe, while Lex inflicts further heartache on Clark by presenting him with an invitation to his wedding. Drama, starring Kristin Kreuk and Tom Welling

 
Season 6 Episode 15
Freak Lex employs the services of a boy named Tobias, who was blinded by the meteor shower but left with the ability to identify those with special powers. Lana worries he will reveal Clark's true identity, and attempts to bribe him with the offer of a cornea transplant - unaware Tobias has plans of his own

 
Season 6 Episode 16
Promise Clark has a change of heart regarding Lex's impending marriage to Lana, who shares the young hero's apprehension. The doctor responsible for keeping the secret behind Lana's pregnancy decides to blackmail Lex with his knowledge

 
Season 6 Episode 17
Combat Lois investigates a lethal underground fight club led by a fugitive from the Phantom Zone named Titan - only to find herself press-ganged into appearing in the ring as a combatant. To make matters worse, her opponent is Clark. Meanwhile, Lex is forced to tell Lana she has lost the baby due to complications

 
Season 6 Episode 18
Progeny Clark helps Chloe break into the asylum and rescue her mother Moira, whose meteor-induced special powers have brought her to the attention of Lex. Meanwhile, Lana makes a shocking discovery about her pregnancy. Lynda Carter guest stars

 
Season 6 Episode 19
Nemesis Clark tries to rescue Lex from the clutches of a vengeful woman holding him prisoner in the tunnels beneath a water-purification plant, only to be robbed of his powers by an explosion in the surrounding deposits of kryptonite

 
Season 6 Episode 20
Noir Jimmy is knocked unconscious and dreams of what life might have been like in Smallville during the 1940s. He imagines Clark as a reporter for the Daily Planet, Lana as a femme fatale and Lois as a singer in a bar owned by Lionel. Drama, starring Aaron Ashmore, Tom Welling and Kristin Kreuk

 
Season 6 Episode 21
Prototype Lex dispatches a genetically enhanced supersoldier to kill corrupt US senator Ed Burke, who is threatening to tell the world what goes on behind the doors of his secret labs. Unfortunately, Lois witnesses the attack while snooping around in search of a scoop - and finds her own life in danger

 
Season 6 Episode 22
Phantom Clark discovers Lana's reason for marrying Lex, who in turn attempts to use DNA harvested from the last phantom as a power source for his super-soldiers. Lois is seriously injured, and Chloe's power comes to light

 
Season 7 Episode 1
Bizarro Clark Kent's fight with Bizarro, the last spectre from the Phantom Zone, causes the dam to break. Lex Luthor is rescued from a submerged police car by the mysterious Kara, but Lois's attempts to save Chloe prove futile. Starring Tom Welling and Michael Rosenbaum

 
Season 7 Episode 2
Kara Clark Kent meets Kara, but decides to leave Smallville instead of facing life without Lana. The youthful adventurer goes to the Fortress of Solitude to start training as a superhero, but discovers that his cousin's father is dangerous and that he must return to Smallville. Starring Tom Welling and Laura Vandervoort

 
Season 7 Episode 3
Fierce Kara enters the Miss Sweet Corn Pageant, despite objections from Clark. While Lex shows an interest in her, three fellow contestants find out about her powers and decide to use them to steal a priceless time capsule. Starring Tom Welling

 
Season 7 Episode 4
Cure Chloe takes an interest in Dr Curtis Knox's claim that he can cure meteor freaks, changing their lives, although it transpires that he may have another secret. Meanwhile, Kara forms an alliance with Jimmy, and Lana secretly watches Lex. Guest starring Dean Cain

 
Season 7 Episode 5
Action Somebody sees Clark secretly use his powers to save someone from a runaway car when a movie is shot in Smallville and becomes his biggest fan. Meanwhile, Lionel's fate is revealed. Starring Tom Welling, John Glover and guest Christina Milian

 
Season 7 Episode 6
Lara Kara is captured after breaking into a lab in Washington to look for her missing crystal. While being interrogated with a memory-revealing serum containing kryptonite, she relives a trip to Earth from the past when she followed Clark's biological mother Lara to the Kents' farm

 
Season 7 Episode 7
Wrath Lana assimilates Clark's powers during a thunderstorm and uses them to break into Lex's safe and steal incriminating evidence, which she takes to the Daily Planet as proof of his wrongdoings. Her actions leave the superhero with the task of saving his arch enemy

 
Season 7 Episode 8
Blue Clark is reunited with his biological mother, who gives him Jor-El's ring. Unfortunately, it contains blue kryptonite, and promptly strips him of his powers. Meanwhile, Chloe and Lex discover Lois and Grant have been seeing each other, and warn them to stop

 
Season 7 Episode 9
Gemini 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 obtain the truth on 33.1 from the villain

 
Season 7 Episode 10
Persona Chloe starts to notice Clark is behaving out of character, while Bizarro turns to Brainiac for help with killing the youthful adventurer and securing Lana for himself. Meanwhile, Grant and Lionel come face to face with a mugger - with fatal consequences

 
Season 7 Episode 11
Siren Lex employs the services of costumed vigilante the Black Canary, a glamorous masked figure with weird sonic powers, to ensure Green Arrow stops meddling in his plans. Guest starring Alaina Kalanj

 
Season 7 Episode 12
Fracture Chloe agonises over whether to heal a comatose Lex, who has been shot by a restaurant employee infatuated with Kara. While she is deliberating, Clark takes a more direct course of action. Starring Allison Mack, Michael Rosenbaum and Laura Vandervoort

 
Season 7 Episode 13
Hero Pete Ross returns to town and is surprised by a number of changes since his departure. As well as dealing with his feelings since he discovered Clark's secret, he also has to come to terms with his own newly acquired superpower

 
Season 7 Episode 14
Traveller Chloe and Lana persuade Kara to visit the Fortress and ask Jor-El to restore her memory so that she can rescue Clark, who has been kidnapped by a mysterious team of mercenaries. Tom Welling stars

 
Season 7 Episode 15
Veritas Clark and Kara join forces to fight Brainiac, who has driven a mental probe into Lara's brain and taken over her mind, but endanger the lives of their friends in the process. Tom Welling stars as the youthful adventurer, with Kristin Kreuk and James Marsters

 
Season 7 Episode 16
Descent Lex determines to get hold of the key no matter what the cost, leading him to commit a terrible crime. Clark and Chloe race to stop him, but must deal with Gina's scheming and Lois and Jimmy's own investigations into Isis. Tom Welling, Michael Rosenbaum and Allison Mack star

 
Season 7 Episode 17
Sleeper Clark seeks out answers after discovering a computer transmission from 1989 advising that Lana and the Fortress need to be saved, and is warned by Kara that Brainiac plans to kill him. A government agent investigates Chloe's activities, and Lex uses the Veritas keys

 
Season 7 Episode 18
Apocalypse When Clark wonders whether the world would be better off if he had not gone to Smallville, Jor-El shows him what life would have been like if he had never existed, and tells him he must stop Brainiac from achieving his nefarious goals

 
Season 7 Episode 19
Quest After Lex is attacked by a mysterious stranger, he and Clark discover the Veritas group's last surviving member, who holds the secret to controlling the fledgling superhero. Michael Rosenbaum and Tom Welling star

 
Season 7 Episode 20
Arctic Lex goes to the Fortress to fulfil his destiny by defeating Clark, whom he suspects of conspiring to destroy the human race. Meanwhile, Lana emerges from her coma and Chloe is arrested. Last in series

 
Season 8 Episode 1
Odyssey A search team consisting of youthful heroes Green Arrow, Black Canary and Aquaman sets out to find Clark, who was last seen in the Arctic. Tom Welling stars

 
Season 8 Episode 2
Plastique Clark finds out what it feels like to work with Lois Lane, and Chloe invites an injured 15-year-old to live with her. Tom Welling stars as the youthful adventurer

 
Season 8 Episode 3
Toxic Oliver Queen is poisoned at a charity event and hovers on the brink of death, sending Clark off on a quest around the world in search of a cure - and prompting Chloe to make a shocking decision

 
Season 8 Episode 4
Instinct An alien princess comes to Earth in search of a mate, but unfortunately her kiss proves fatal to ordinary men - so she sets her sights on Clark, whose invulnerability makes him the ideal candidate to be her partner

 
Season 8 Episode 5
Committed Clark and Lois join forces to rescue Chloe and Jimmy from the clutches of kidnapper who subjects his victims to a lie detector test to measure their feelings for each other

 
Season 8 Episode 6
Prey Clark suspects Chloe's new friend Davis Bloome is a serial killer whose crimes have brought terror to the streets of Smallville - a suggestion she is quick to refute

 
Season 8 Episode 7
Identity A photo of Clark saving Lois from danger comes out in a blur on film, and Tess decides the story is worthy of front page news, but Chloe refuses to help her friend in the situation

 
Season 8 Episode 8
Bloodline Clark and Lois are accidentally transported to the Phantom Zone, where they meet Kara - who attempts to free them, but only succeeds in allowing Zod's wife to escape. Adventures following the early escapades of Clark Kent, starring Tom Welling as the fledgling superhero

 
Season 8 Episode 9
Abyss Brainiac replaces Chloe's memories with a Kryptonian code, and Clark must ask for Jor-El's help to save his friend. Meanwhile, Davis tries to prove Jimmy is an unsuitable boyfriend. Superhero adventure, starring Tom Welling, Allison Mack, James Marsters and Sam Witwer

 
Season 8 Episode 10
Bride Unexpected guests turn up at Chloe and Jimmy's ceremony, and Oliver is shocked to see Lana when he expected to find Lex. Meanwhile, Lois and Clark begin to fall for each other. Superhero adventures, starring Allison Mack, Aaron Ashmore, Justin Hartley, Kristin Kreuk, Tom Welling and Erica Durance

 
Season 8 Episode 11
Legion Three superheroes from the future join forces with Clark to help him defeat Brainiac, who has taken over Chloe's body. Ryan Kennedy, Alexz Johnson and Calum Worthy guest star, with Tom Welling and Allison Mack

 
Season 8 Episode 12
Bulletproof Clark goes undercover to find out why Detective John Jones was shot, while Lana confronts Tess and reveals the truth about her involvement with Lex. Superhero adventure, starring Tom Welling, Kristin Kreuk and Cassidy Freeman

 
Season 8 Episode 13
Power Clark learns Lana has gone missing, while Tess discovers something startling at a secret LutherCorp facility. Superhero adventures, starring Tom Welling and Kristin Kreuk

 
Season 8 Episode 14
Requiem An explosion wipes out the entire LuthorCorp board of directors and almost kills Oliver. Although suspicion initially falls on Lex, Clark and Lana eventually trace discover a toy-maker with a grudge is responsible for the blast. Superhero adventure, starring Tom Welling, Kristin Kreuk and Justin Hartley

 
Season 8 Episode 15
Infamous When Clark's identity as the `red-blue blur' is threatened, he decides to go public about his powers by asking Lois to publish his story, but he is unprepared for the response

 
Season 8 Episode 16
Turbulence Tess orchestrates an explosion on a private jet in an effort to get Clark to reveal his powers, while Davis discovers a surprising method of controlling the monster within. Drama, starring Tom Welling

 
Season 8 Episode 17
Hex Chloe's birthday wish to be more like Lois comes true thanks to the interference of a sorceress, who gives her the chance to live life as her reporter cousin

 
Season 8 Episode 18
Eternal Though Tess's attempt to kill Davis fails, his past with the Luthors is revealed. Meanwhile, Clark and Chloe discover his secret

 
Season 8 Episode 19
Stiletto Realising she needs a good story to kick-start her journalistic career, Lois pretends a new superhero called Stiletto is operating in Metropolis - and has begun giving her exclusives

 
Season 8 Episode 20
Beast Clark is shaken to discover Davis is still alive and decides to banish him to the Phantom Zone - but makes the mistake of confiding in Chloe, who sets about sabotaging his plan. Meanwhile, Oliver discovers Jimmy's secret and offers him emotional support

 
Season 8 Episode 21
Injustice Chloe tells Clark that Davis can no longer control the beast within, so they join a team whose members were affected by the meteors to track him down. Allison Mack stars

 
Season 8 Episode 22
Doomsday Despite his threat, Clark cannot bring himself to kill Davis - which pits the hero against Oliver and his team as they plan to bring Doomsday down themselves. Last in the series

 
Season 9 Episode 1
Saviour New series. Before he can begin training, Jor-El wants Clark to cut his ties with Lois, who has reappeared in the city with no recollection of her journey into the future. Meanwhile, a new reporter with a secret power starts at the Daily Planet, and Chloe's friendship with Clark looks in jeopardy when he refuses to use the Legion ring to save Jimmy. Guest starring Brian Austin Green (Beverly Hills, 90210)

 
Season 9 Episode 2
Metallo John Corben awakes from the accident to find his heart has been replaced with a meteor-powered machine, giving him superhuman strength to use in his plan for revenge

 
Season 9 Episode 3
Rabid Zod wreaks havoc when he unleashes a virus that turns humans into zombies, and Dr Hamilton discovers that blood from a Kryptonian is the only thing that counteracts the disease

 
Season 9 Episode 4
Echo A freak accident gives Clark the ability to read Lois's mind, allowing him the opportunity to use the power to his advantage by asking her out. Meanwhile, Oliver is taken hostage by someone looking to clear his name. Tom Welling stars

 
Season 9 Episode 5
Roulette A mysterious woman kidnaps Oliver and forces him to play a game of Russian Roulette, while Lois confronts Clark over his friend's suicide attempt

 
Season 9 Episode 6
Crossfire Oliver is betrayed by a street girl he tries to help, while Lois and Clark receive a surprising offer from a TV company

 
Season 9 Episode 7
Kandor Jor-El arrives on Earth in search of his son, but finds Chloe instead. Clark realises that Jor-El is alive and races to find him before Zod does

 
Season 9 Episode 8
Idol Zan and Jayna travel to Metropolis to help Clark fight crime, but end up landing him in trouble with the district attorney. Drama, starring Tom Welling and David Gallagher

 
Season 9 Episode 9
Pandora Tess tries to uncover the meaning of what Lois saw in the future, including why Clark becomes subservient to Zod. Drama, starring Tom Welling and Erica Durance

 
Season 9 Episode 10
Disciple Oliver's past comes back to haunt him when his former teacher seeks revenge on the student and targets Lois and Chloe. Justin Hartley stars

 
Season 9 Episode 11
Absolute Justice - Part One Lois and Clark go on a date for Valentine's Day, but the superhero becomes infected with kryptonite that has wish-fulfilling properties. When he asks his girlfriend for a more traditional relationship, she packs in her job at the Daily Planet and starts planning their wedding

 
Season 9 Episode 12
Absolute Justice - Part Two Part two of two. Lois is sent an anonymous package detailing the Justice Society's work, Clark discovers his fate, and Icicle embarks on a deadly mission, leaving the veteran heroes facing a race against time to defeat him

 
Season 9 Episode 13
Warrior A teenage thief steals a comic-book with magical powers, and finds himself transformed into the title character, a costumed hero called Warrior Angel. Meanwhile, Lois becomes jealous of Clark's friendships with other women - especially the mystical Zatanna

 
Season 9 Episode 14
Conspiracy A doctor who was brought back to life by the Kandorians so they could experiment on him manages to escape. He tries to persuade Lois to write a story validating his claim that aliens have invaded Earth, but when she refuses, he kidnaps her. Guest starring JR Bourne, with Erica Durance and Tom Welling

 
Season 9 Episode 15
Escape Clark and Lois's romantic getaway is interrupted when they run into Chloe and Oliver. Meanwhile, a confrontation between Tess and Zod ends with a surprising result

 
Season 9 Episode 16
Checkmate Tess creates an elaborate hoax to kidnap Green Arrow, but he manages to escape before revealing his identity, while Clark investigates the motive behind the incident

 
Season 9 Episode 17
Upgrade Lois finds herself in danger when Zod asks the reporter to investigate one of Tess's secret labs. Meanwhile, Corben helps out when Clark is exposed to red kryptonite

 
Season 9 Episode 18
Charade Lois finds herself in danger when she investigates the early release of a former attorney, while a wealthy tycoon tries to discover the Blur's identity in a bid to eliminate him

 
Season 9 Episode 19
Sacrifice Tess triggers an elaborate security system when she breaks into the Watchtower, and Chloe realises that she will have to make a drastic move. Oliver suffers the terrible consequences of confronting Zod

 
Season 9 Episode 20
Hostage Martha Kent returns to Smallville for a visit, bringing along her new boyfriend Perry White, who learns of Clark's dismissal from the Daily Planet and tries to get him reinstated. Meanwhile, Zod and his army step up their plans to take over the Earth

 
Season 9 Episode 21
Salvation Zod unleashes his army on Earth and tells Lois he is The Blur, leaving her torn between him and Clark. Chloe has to call for reinforcements as the situation worsens leaving the two enemies fighting for control of the planet. Tom Welling, Allison Mack, Erica Durance and Callum Blue star. Last in the series