smallville season 5: episodes:

5x01: Arrival:

Clark is transported to the North Pole after he unites the Stones of Power in the Kawatche Caves. The Disciples of Zod arrive in their Black Ship. Lois helps the Kents after their home is badly damaged by the second meteor shower.

5x02: Mortal:

Jor-El strips Clark of his powers, leaving him free to pursue a "normal" life. But when those closest to him are taken hostage to force him to recover a serum from LuthorCorp's Level 3, Clark and Chloe must save the day without his superhuman abilities.

5x03: Hidden:

Gabriel, a former Smallville High student, 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.

5x04: Aqua:

Lois hits her head while diving and is saved by a mysterious swimmer, Arthur Curry. Clark meets Professor Milton Fine after his first lecture. AC attempts to break into the LuthorCorp Marine Center to destroy a weapon but when he is captured, Clark saves him and helps him destroy the weapon, thereby ruining the deal Lex has been brokering. Clark finally finds himself unable to trust Lex any longer and agrees to work for Professor Fine in exposing the activities of Luthorcorp.

5x05: Thirst:

Lana decides to enroll at Metropolis University at the last minute and is forced to join a sorority to find housing at such a late date. Chloe applies for an internship at the Daily Planet and writes a story about Lana's new mysterious sorority sisters and their leader, Buffy Sanders. Milton Fine reveals his evil side and superhuman powers when he kills Lex's bodyguard.

5x06: Exposed:

Jack Jennings, an incumbent State Senator, comes to Smallville to visit his old friend Jonathan. However, after a young stripper turns up dead, it is revealed that she was Jennings' mistress, which makes him the prime suspect. Searching for answers, Chloe, Lois, and Clark launch an investigation, but Lois is kidnapped by the murderer.

5x07: Splinter:

Clark is exposed to a new to kind of meteor rock, silver kryptonite, causing him to have paranoid delusions about those around him. The silver kryptonite makes him believe that Chloe is going to reveal his secret, Jonathan is scheming against him with Lionel, and Lex and Lana are having a secret relationship. Chloe and the Kents frantically search for a cure, but it is Professor Fine who comes to Clark's rescue.

5x08: Solitude:

When Martha comes down with a strange disease, Professor Fine convinces Clark that Jor-El is responsible and that the Fortress of Solitude must be destroyed to save her life. However, Professor Fine has an ulterior motive which comes to fruition when they arrive.

5x09: Lexmas:

Lex considers whether to turn an operative loose to obtain or fake damaging information against Jonathan to upset his Senatorial race. But when Lex is shot, he falls into a coma and is visited by the ghost of his mother, who shows him what his life could be like if he frees himself from his father. Meanwhile, Clark helps deliver Christmas presents.

5x10: Fanatic:

The Senatorial race between Jonathan and Lex heats up when Jonathan receives an anonymous threat warning him to drop out of the election.

5x11: Lockdown:

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.

5x12: Reckoning:

Jonathan and Lex learn the results of the senatorial election. Clark makes a fateful decision to reveal his secret to Lana, but Jor-El's prediction that Clark will lose a loved one forever comes to pass.

5x13: Vengeance:

Clark and Chloe discover that the new reporter at the Daily Planet-- a bespectacled, bumbling woman named Andrea Rojas-- is actually a masked avenger who fights crime at night. Meanwhile, Clark's bottled-up grief threatens to get the best of him.

5x14: Tomb:

Chloe seemingly attempts suicide, but she denies this and insists she saw a ghost. Lana and Lex try to transfer her to Belle Reve, but Clark breaks her out of the hospital first. When they find the body of a young girl in the walls of the Talon, a mysterious amulet on the body transfers the girl's spirit into Chloe. Under her possession, she tries to extract revenge on her murderer.

5x15: Cyborg:

A sympathetic doctor releases a half-human/half-machine subject named Victor Stone who was being held captive and experimented on by LuthorCorp. While making his escape, Victor is struck by Lana's car. After watching him walk away without a scratch, Lana calls Clark to investigate. Clark befriends Victor and promises to help him find his girlfriend, but Lex traps Victor and takes him back to LuthorCorp.

5x16: Hypnotic:

Lex discovers that Professor Fine is in Honduras and sets out to confront him. Clark meets a beautiful seductress named Simone who uses a magical charm to make people succumb to her every wish. An enchanted Clark reveals his powers to Simone, who seizes the opportunity and demands that Clark kill Lex.

5x17: Void:

Still distraught over her break-up with Clark, Lana experiments with a dangerous serum that allows her to flat-line and see her deceased parents again. A worried Clark rushes to save Lana from hurting herself, but ends up being injected. When Clark flat-lines, he is able to talk to his recently deceased father, who warns him that Lionel knows his secret. Meanwhile, Lionel continues to get closer to Martha.

5x18: Fragile:

Clark and Martha take in a little girl, Maddie, after her foster mother is killed. However, it is discovered that Maddie has the power to shatter glass and she becomes the prime suspect. Meanwhile, Chloe suspects that Lex and Lana are becoming more than friends.

5x19: Mercy:

Martha and Lionel are caught in a dangerous cat-and-mouse game by a vindictive former LuthorCorp employee, and Clark must save Martha, but risk confirming his powers to Lionel in the process.

5x20: Fade:

Clark saves the life of a stranger named Graham, who vows to repay Clark for his kindness. Unfortunately, Graham is a hit man with the ability to cloak himself, and he decides killing Lex would be the best gift he could give Clark. Meanwhile, Clark confronts Lana about her relationship with Lex.

5x21: Oracle:

Clark is stunned when he sees his father’s ghost, but becomes even more confused after Jonathan tells him he must kill Lionel. Meanwhile, Lex develops a vaccine for Fine’s deadly virus, but Fine intervenes and injects him with the vaccine, which causes a shocking reaction in Lex.

5x22: Vessel:

When Clark refuses be the vessel to free General Zod, Brainiac unleashes a computer virus that throws the world's major cities in chaos. Jor-El and Lionel instruct Clark to defeat Zod's vessel, even if it means killing Lex. Clark, trying to avoid killing his former friend, tries to obliterate Fine. Instead, he opens the portal for Zod to inhabit Lex while simultaneously getting caught in the Phantom Zone.