After Tess is admitted to the hospital showing zombie-like symptoms, Clark has Dr.Hamilton investigate the cause with a Disease Control specialist.Original depictions list the character as "General Zod".

Oliver decides to burn his Green Arrow outfit, and give up trying to be a superhero.

Jor-El gives Clark the ability to hear others' thoughts in an effort to teach Clark to hone his Kryptonian intuition and learn to not allow humanistic assumptions inhibit his destiny.

The ninth season comprises 21 episodes and concluded its initial airing on May 14, 2010, marking the fourth season to air on The CW television network.

After four seasons broadcasting on Thursday nights at pm, Smallville was moved to Friday nights at pm for season nine, to make room for The Vampire Diaries.

After saving Lois, Clark's feelings for her cause a disruption in his training and he realizes that the only way to finish is if he tells Lois goodbye. Emil Hamilton and Chloe begin working together in the Watchtower.

Released from the black orb, Major Zod's soldiers initially turn on him when he fails to provide answers as to why none of them have the true powers of a Kryptonian like they should. A Kandorian woman (Monique Ganderton) from the future returns with Lois in the hope of finding Clark and killing him.

Clark overhears that Tess was at the Daily Planet when she began to show symptoms, so he speeds to the Planet to rescue Lois.

In a battle with multiple zombie attackers, Lois is bitten. Hamilton, who discovers that the virus was created from Kryptonian enzymes, so the doctor can create a cure. Hamilton manufactures a rainstorm and seeds the clouds with the cure to create maximum coverage.

When the two meet, the assassin releases blue kryptonite that nullifies hers and Clark's powers.

In the battle the assassin is accidentally killed when she impales herself but not before revealing that Clark will cause the destruction of Earth.

Season nine of Smallville, an American television series, began airing on September 25, 2009.