Smallville 9x21 Salvation Season 9 Season 0 0 EpisodesSeason 1 21 EpisodesSeason 2 23 EpisodesSeason 3 22 EpisodesSeason 4 22 EpisodesSeason 5 22 EpisodesSeason 6 22 EpisodesSeason 7 20 EpisodesSeason 8 22 EpisodesSeason 9 21 EpisodesSeason 10 21 Episodes 9x1 - Savior 9x2 - Metallo 9x3 - Rabid 9x4 - Echo 9x5 - Roulette 9x6 - Crossfire 9x7 - Kandor 9x8 - Idol 9x9 - Pandora 9x10 - Disciple 9x11 - Absolute Justice 9x12 - Warrior 9x13 - Persuasion 9x14 - Conspiracy 9x15 - Escape 9x16 - Checkmate 9x17 - Upgrade 9x18 - Charade 9x19 - Sacrifice 9x20 - Hostage 9x21 - Salvation When Zod and the Kandorians launch their brutal attack on Earth, Chloe calls in some old friends to join the fight against the aliens. Clark and Zod face off in an epic battle for the control of Earth.