Here's the episode guide of Smallville Season 10 which will premiere in October 2010:
SMALLVILLE SEASON 10
Smallville S10x01 Lazarus
The season premiere picks up where the finale left off. Lois finds Clark's lifeless body and removes the blue kryptonite enabling him to heal himself. However, Lois sneaks away before Clark fully awakens in order to protect his secret. Meanwhile, Chloe is desperate to find Oliver, so she turns to an unlikely source for answers. Jonathan returns to the Kent Farm with a message for Clark, and Tess awakens in a LuthorCorp lab.
Smallville S10x02 Shield
After Lois departs for Egypt, the Daily Planet hires a new reporter by the name of Kat Grant to take her place. An assassin named Deadshot takes aim at Kat but Clark learns the man has a dangerous hidden agenda that involves The Blur. Meanwhile, Carter Hall turns up in Egypt to keep an eye on Lois and he tells Lois about his wife Shayera.
Smallville S10x03 Supergirl
Clark is stunned when Kara returns to Earth and tells him Jor El sent her to stop the dark force that is coming because he doesn't believe Clark can handle it. Meanwhile, Lois confronts Gordon Godfrey, a shock jock radio DJ who has been crusading against heroes, after he threatens the Green Arrow. However, after Godfrey is possessed by the dark force, he takes Lois hostage and Clark and Kara have to come to her rescue.
Smallville S10x04 Homecoming
In an attempt to cheer up Clark (Tom Welling), Lois (Erica Durance) convinces him to attend their five-year high school reunion. A visit back to the home of the Crows has Clark remembering old times with Lana (Kristin Kreuk) and Chloe (Allison Mack), while Losi is furious that no one remembers her five days as a student. Brainiac 5.0 (James Marsters) uses his Legion ring to visit from the future and takes Clark through his past, present and future. He shows Clark what really happened the night Jonathan died, Oliver's (Justin Hartley's) current pain and Clark's future at the Daily Planet with Lois and his role as Earth's favorite red and blue superhero
Smallville -Season 10 Episode 4 Homecoming
Smallville S10x05 Isis
Thanks to an Egyptian relic, Lois gains superpowers and goes a crimefighting spree... bringing her to the attention of Cat Grant, who assumes Lois is Blur. Meanwhile, Oliver and Clark have no choice but to turn to Tess for help when dealing with Lois when she gets in over her head.
Smallville - Season 10 Episode 5 Isis
Smallville S10x06 Harvest
To protect his girlfriend, Clark tricks Lois into leaving town on a story. When she realizes what's going on, they argue but an accident strands them in the middle of nowhere. Meanwhile, Tess tries to find a cure for Alexander, who is suffering from rapid aging because of his unnatural origins.
Smallville - Season 10 Episode 6 Harvest
Smallville S10x07 Ambush
GENERAL LANE AND LUCY LANE RETURN TO SMALLVILLE FOR THANKSGIVING - The General (guest star Michael Ironside) and Lucy Lane (Peyton List) decide to drop in on Lois (Erica Durance) and Clark (Tom Welling) for a surprise Thanksgiving dinner. Clark and the General get off to a rocky start after Lois’ father bashes the superheroes and tells Clark he is trying to pass a vigilante registration law. Meanwhile, in an effort to stop the vigilante registration act from being passed, Rick Flagg (guest star Ted Whittall) lies to Lucy in order to lure Clark away from the farm long enough for him to assassinate the General. Lois is torn between making her father proud and her love for Clark.
Smallville - Season 10 Episode 7 Ambush
Smallville S10x08 Abandoned
Lois finds a video made for her by her mother, Ella Lane, before she died. After watching the tape, Lois makes a drastic decision about her relationship with Clark that takes her to the Fortress, where she comes face to face with Jor-El and Lara. Meanwhile, Tess has a nightmare involving herself as a child and a music box. Upon awakening, she finds the music box in Luthor mansion and sets out to find out who planted it there. Clark accompanies her to an orphanage run by Granny Goodness who may not have the young girls' best intentions in mind. One of the young women living there, Harriet, finds Clark snooping around and decides to take matters into her own very sharp hands.
Smallville - Season 10 Episode 7 Abandoned
Smallville S10x09 Patriot
In an effort to protect the rest of the team, Oliver (Justin Hartley) decides to register for the Vigilante Registration Act to see what the government plans to do with the new law. As he suspected, it was a trap to lure superheroes to an undisclosed location where he is confined to a jail and subjected to a battery of brutal tests under the supervision of Col. Slade (guest star Michael Hogan, Battlestar Galactica). Aquaman (guest star Alan Ritchson) and his new wife Mera (guest star Elena Satine) team up with Clark to free Oliver. Lois is frustrated when Clark continues to push aside her offers to help the team and sets out to prove she can play with the big boys. Tom Welling directed the episode written by John Chisolm.
Smallville - Season 10 Episode 9 - Patriot
Smallville S10x10 Luthor
Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he's transported to a parallel universe where Lionel found Clark in the cornfields instead of the Kents. In this universe, Clark Luthor is a murderer and Lois is engaged to Oliver and both of them hate Clark. Clark must be careful not to tip off Lionel that he's not his son while trying to figure out how to get back to Earth where the monster Clark Luthor was transported in his place
Smallville - Season 10 Episode 10 - Luthor
Smallville S10x11 Icarus
The VRA (the Vigilante Registrations Act) is in full effect and things take an unfortunate turn of events after the Green Arrow (Justin Hartley) tries to stop a mugging but is attacked by citizens for being a super hero. Clark (Tom Welling) discovers that the civilians who attacked Oliver were all marked with a darkness tattoo. Carter Hall (guest star Michael Shanks) and Star Girl (guest star Britt Irvin)return to help Clark deal with Slade’s (guest star Michael Hogan) re-emergence after he kidnaps Lois (Erica Durance).
Smallville Season 10 Episode 11 - Icarus
Smallville S10x12 Collateral
"Clark (Tom Welling), Oliver (Justin Hartley), Lois (Erica Durance) and Dinah (guest star Alaina Huffman) are released by the VRA after being captured at Hawkman’s funeral but each of them have flashbacks of Chloe (Allison Mack) holding them against their will. When Chloe returns, Dinah warns the others that Chloe may now be a traitor. Oliver dismisses her concerns but Clark is unsure if he can trust Chloe after she disappeared without an explanation. Cassidy Freeman also stars. Morgan Beggs directed the episode written by Jordan Hawley."
Smallville Season 10 Episode 12 - Collateral
Smallville S10x13 Beacon
"Clark is surprised to see Martha Kent on the news speaking at a pro-vigilante rally. However, surprise quickly turns to horror when he and Lois watch as Martha gets shot on national television. Meanwhile, Lionel reveals himself to the world and reclaims LuthorCorp from Tess and Oliver. Lois and Chloe decide to cheer Clark up by showing him videos from thousands of vigilante supporters professing their support for The Blur."
Smallville Season 10 Episode 13 - Beacon
Smallville S10x14 Masquerade
Chloe and Oliver are mistaken for FBI agents investigating Desaad's recent string of murders and the pair are kidnapped by Desaad’s minions. Desaad tries to infect Chloe with the darkness. Meanwhile, Lois tells Clark he needs to be more careful with his identity and suggests a disguise.
Smallville Season 10 Episode 14 - Masquerade
Smallville S10x15 Fortune
After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast and can’t remember anything about the night before. When Lois realizes she lost her engagement ring and drags Oliver back to the Fortune Casino, the two run into the owner Amos Fortune, who accuses them of stealing money from him. Meanwhile, Clark tells Chloe he has a memory of stealing an armored truck the night before.
Smallville Season 10 Episode 15 - Fortune
Smallville S10x16 Scion
Lionel (John Glover) and Tess (Cassidy Freeman) go head to head in a battle for the Luthor name. Clark (Tom Welling) and Lois (Erica Durance) are stunned by Tess’ latest present to them. Al Septian directed the episode written by Al Septian & Turi Meyer
Smallville Season 10 Episode 16 - Scion
Smallville S10x17 Kent
Smallville Season 10 Episode 17 - Kent
Smallville S10x18 Booster
While Lois advises Clark on how to maintain a low profile, a new hero, Booster Gold, travels from the future to present-day Metropolis to become a media darling as a superhero. However, one of his rescues goes wrong, causing an alien scarab-weapon to attach itself to a teenage boy, growing into a battlesuit and transforming him into the Blue Beetle.
Smallville Season 10 Episode 18 - Booster
Smallville S10x19 Dominion
Tess (Cassidy Freeman) learns that General Slade was found unconscious on a street corner, proof that someone has gained access to the Phantom Zone's escape portal and sent him back. Clark (Tom Welling) decides to return to the exiled land to make sure other phantoms are not fleeing and is furious when Oliver (Justin Hartley) tricks Clark into taking him along. With Clark's powers gone, the two are immediately captured by the Zoners who take them to their new leader, Zod (Callum Blue), who is thirsting for revenge on Clark for banishing him to this Kryptonian jail. Meanwhile, Lois (Erica Durance) learns Clark trusted Tess with a secret, but didn't tell Lois. Justin Hartley directed with story by John Chisholm.
Smallville S10x20 Prophecy
Clark takes Lois to the Fortress to get Jor-El blessing for their marriage. Jor-El bestows a unique wedding gift on the couple – he gives Lois Clark's super powers so she can see what it's like to be him for a day. Unfortunately, the Toyman has returned to Metropolis, so Lois must go up against the notorious villain instead of Clark. Meanwhile, Oliver searches for the Bow of Orion, which he believes will remove the Omega symbol from his skull, and runs into Kara, who is also on a mission to stop Darkseid.
Smallville S10x21 Finale (Part 1)"
Smallville S10x22 Finale (Part 2)"
We will complete this episode list of Smallville Season 10 and add summaries as soon as more details become available.
So stay tuned!